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How do scientists know that Earth is currently in the middle of an ice age or interglacial period?

Select one

A. Due to climate change , and snow are rapidly melting .

B. Carbon dioxide levels are decreasing , which is causing Earth's temperature to become cooler

Answers

Answer 1
A. The argument recently in science has been the rising levels of carbon dioxide which is major component of climate change

Related Questions

During cellular respiration, cells convert the energy stored in glucose to make the energy molecule ATP, as shown in the equation. Less than 40% of the energy found in glucose is actually converted into ATP. What happens to the other 60% of this energy

Answers

Answer:

the other 60% of energy is stored away for further use in the cell

Explanation:

i hope im right

In the cell from glucose, 40% of energy is utilised to make ATP and the rest 60% is used in the process of making ATP. So 100% of glucose cannot be converted into ATP.

How does ATP form from glucose?

Glucose is a major source of energy. It has carbon, oxygen, and hydrogen . Due to the presence of oxygen, it can easily break down to produce energy during times of need.

Glucose is broken down into pyruvate by the process of glycolysis. In this process, the net gain is 2 ATP. Pyruvate converts into acetyl CoA. ATP is required in this process. Acetyl CoA enters the Krebs cycle.

To enter the mitochondria, ATP is required. Acetyl CoA enters the krebs cycle and electron transport chain.  The FADH₂ , NADH are broken. Proton gradient is formed due to the electron movement. Then ATP is formed due to the proton gradient across the inner mitochondrial membrane . To make ATP a lots of ATP have used in the process. So net gain of ATP of a glucose is 40% as rest 60% has used in the process .

Hence, 40% of energy of glucose make ATP, and the rest 60% is used in the process of making ATP

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12. Why does Dr. Jablonski dismiss the hypothesis that protection from skin cancer provided selection for the evolution of darker skin in our human ancestors

Answers

Answer:

Because skin cancer does not usually arise until after an individual's peak reproductive years.

Explanation:

Can someone please help mePut them all in order

Answers

Answer:

The 4th one should be the 1st one

And the 1st one should be the 2nd one

And tge 2nd one should be the 3rd one and the 3rd one should be the 4th one.

Can someone please help me :)

Answers

Answer:

Wit what

Explanation:

1c 2d 3b 4e 5g 6f 7a

How does the digestive system interact with the circulatory system?
A. Messages sent as electrical impulses from the digestive system are transported throughout the body by the circulatory system.
B. Nutrients taken in and broken down by the digestive system are carried to various parts of the body by the circulatory system.
C. Oxygen and carbon dioxide are exchanged by organs in the digestive system, and the gases are carried to the rest of the body by the circulatory system.
D. Nutrients and gases are absorbed by organs in the circulatory system. Then, they are transported to all parts of the body by organs in the digestive system.

Answers

Answer:

D

Explanation:

the circulatory absorbs nutrients and carries the chemical to signal through endocrine to control the speed of digestion.

Which of these factors is involved in earthquake formation?

Answers

Answer:

The factors involved in earthquake formation are: plates moving, rocks breaking and movement below the surface.

plates moving rocks breaking stress that decreases faults that remain stationary movement below the surface.

8. (02.02 LC)
Ecological tolerance can apply to (4 points)

individuals only

species only

both individuals and species

neither individuals nor species

Answers

The answer is individuals only

A hypothesis is a statement that can be tested through a scientific investigation. What is the purpose of writing a hypothesis? A. Hypotheses help identify the variables. B. Hypotheses suggest new questions for further investigations. C. Hypotheses always match the conclusion. D.

Answers

Answer:

B. Hypotheses suggest new questions for further investigations.

Explanation:

The Answer is B. Hypotheses suggest new question for further investigation.

where are the oldest epidermal cells found

Answers

Answer:

stratum basale

The oldest epidermal cells in the epidermis are found in the stratum basale.

Explanation:

hope the answer was helpful..

why does individual commit crime?​

Answers

People commit crimes for many different reasons. whether it is for the excitment and thrill of it or whether they were forced to or peer preasured on by another person. Maybe they robbed a bank cause they needed money or they were under the influence of drugs or alchohol

The causes of crime are complex. Poverty, parental neglect, low self-esteem, alcohol and drug abuse can be connected to why people break the law. Some are at greater risk of becoming offenders because of the circumstances into which they are born.

1
2
3
4
Acid rain
A. results in a decrease in air quality
B. damages the surfaces of buildings, statues, rocks, and leaves
C. increases the rate at which the atmosphere absorbs heat
D. causes plants to absorb water more easily
Please select the best answer from the choices provided
ОА
OB
O c
OD​

Answers

Answer:b

Explanation:

I live in Boston and statues are ripped from it

Scientific studies show that identical twins who were separated at birth and raised in different homes may vary in height, weight, and intelligence. The most probable explanation for these differences is that

Answers

Answer:

Their height and weight will differ depending on there diet, one might be smarter than the other naturally but as their were in different home they will have different ways of comprehending it

Explanation:

I hope that helped

Identical twins who were separated at birth and raised in different homes may vary in height, weight and intelligence

Why difference is observed in height and weight?It is because of the different diet they are taking.The difference can be due to both quality and quantity.It is also because of exercise.The twin with good diet and exercise has appropriate weight.While the one with sedentary habit is over-weight.Why is the difference observed in intelligence?The intelligence not only depends on genetics it also depends on environment.It depends on factors like education, surrounding influences, etc.

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What is the difference between a pathogen and an antigen

Answers

Answer:

Antigen is a molecule capable of causing the immune system to produce antibodies against it. Pathogen is an infectious agent that may cause a disease.

Explanation:

A pile of snow slowly disappears into the air,even though the temperature remains below freezing . Which process explains this?

Answers

Answer:

Sublimation

Explanation:

Sublimation: "the transition of a substance directly from the solid to the gas state, without passing through the liquid state."

Answer:

D Sublimation

Explanation:

A brown mouse is crossed with a heterozygous black mouse if the mother has a litter of four what are the chances of one of them being brown

Answers

Answer:

I used a Punnet Square to determine what percentage of 1 of the mice would be brown.

Explanation:

It is known that complex carbohydrates provide more sustained energy over time than simple sugars such as sucrose. Complex carbohydrates are polysaccharides, which are long chains of smaller sugar molecules bonded together. Simple sugars are monosaccharides that contain only one molecule.
Why do complex carbohydrates provide more energy over time versus simple carbohydrates?

Answers

Answer:

Complex carbohydrates contain longer chains of sugar molecules than simple carbohydrates. The body converts these sugar molecules into glucose, which it uses for energy. As complex carbohydrates have longer chains, they take longer to break down and provide more lasting energy in the body than simple carbohydrates

Explanation:

Answer:

A.) Complex carbohydrates have more chemical bonds to break than simple sugars, which takes longer for the body to digest and provides more units of energy for the body to use.

Proof:

what do you think the rock in Earth’s mantle is like? Is the mantle made of hard, solid rock or soft, solid rock? Explain your ideas.

Answers

Answer:

If the mantle is made out of soft rock, then I think it would melt due to the heat, but if it was hard, it would just burn, so I firmly believe the rock is hard.

Explanation:

Mantle is a layer on planetary body which is made up of minerals. Mantle is solid as it is made up of heavy metals and solid rocks which makes it rigid.

What is Mantle?

A mantle is a layer inside a planetary body bounded by a core and on the above by a crust. Mantle is made up of rock or ices, and is generally the largest and most massive layer of any planetary body. Mantles are on the planetary bodies that have undergone differentiation by density.

The mantle is composed primarily of heavy metals, such as iron, nickel, and others. The state of the mantle was described as plastic. Many divide the mantle into further such as  the asthenosphere and lithosphere.

Mantle rocks are soft and able to move over the course of millions of years at great depth and pressure. The transfer of heat and material in the mantle helps to determine the landscape of the planet.

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Which type of sensory receptors monitor position and movement of the body?

A. Photoreceptors
B. Chemoreceptors
C. Proprioceptors
D. Exteroceptors

Answers

The answer is Proprioceptors.                             

                         

C is the correct answer my guy

Why is it necessary to reduce the number of chromosomes in gametes, but not in other cells

Answers

Answer:

The reduction of chromosomes in the gametes is necessary to make sexual reproduction possible, in which each parent contributes half of their chromosomes and in fertilization a cell with the complete amount of chromosomes is produced, the zygote.

Explanation:

The reduction of chromosomes to form gametes is done by meiosis, a reductive cell division. Sex cells or gametes are haploid cells, i.e. with half the chromosome charge, as each parent must contribute a gamete in the reproductive process.

The union of the parents' gametes is called fertilization and its product is the zygote, whose chromosome charge is complete or diploid.

For a diploid zygote to be formed, it is necessary for the sex cells or gametes to be haploid, or with half of the chromosomes of the species..

The genetic content built of proteins and nucleic acid found in the nucleus of cells are called chromosomes.

The reduction of the chromosome is essential for sexual reproduction.

In this sort of reproduction gametes from each parent fuse to form offspring.

Each parent provides half the number of chromosomes (n) to form a complete offspring with the total set of chromosomes (2n).

In the process of gamete formation chromosomes, get halved due to meiosis.

The reproductive gametes from both the parent combine via fertilization and form the diploid offspring.

Therefore for a diploid offspring to be formed the gametes need to be haploid.

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What is required for sexual reproduction to occur?
1.an individual that produces sperm and an individual that produces eggs
2.an individual that produces sperm and an individual that produces spores
3.an individual that produces buds and an individual that produces spores
4. an individual that produces buds and an individual that produces eggs

Answers

Answer:

1

Explanation:

It sexual reproduction you need both a sperm and egg cell.

Answer: 1. an individual that produces sperm and an individual that produces eggs

Explanation:

This organelle removes and recycles waste from the cell
O. Cytoplasm
O. Golgi Apparatus
O. Lysosome
O. Ribosome

Answers

Answer: Lysosome

Explanation: A lysosome is a membrane-bound cell organelle that contains digestive enzymes. Lysosomes are involved with various cell processes. They break down excess or worn-out cell parts. They may be used to destroy invading viruses and bacteria. (Hope this helps!)

In eukaryotic organisms, DNA transcription occurs in the _______ of a cell.
A.
mitochondria
B.
ribosome
C.
nucleus
D.
cytoplasm

Answers

Answer:

In eukaryotic organisms, DNA transcription occurs in the nucleus of a cell.

the right answer is c, nucleus :)

What a consequence brings the fact that the cerebral cortex is more developed in humans than in animals

Answers

Answer: humans have a very high brain-weight-to-body-weight ratio, but so do other animals. ... Other intelligent animals, such as monkeys and dolphins, also have these folds in their cortex, whereas mice have smooth brains, he said. Humans also have the largest frontal lobes of any animal, Holland said.

Explanation:

Rachal Corporation produces and sells a single product whose selling price is $150.00 per unit and whose variable expense is $57.00 per unit. The company's monthly fixed expense is $381,300.
Required:
a. Assume the company's monthly target profit is $9,300. Determine the unit sales to attain that target profit. Show your work!
b. Assume the company's monthly target profit is $18,600. Determine the dollar sales to attain that target profit. Show your work!

Answers

Answer:a) if the company's monthly target profit is $9,300, 4,200 units sales is needed

b) if the company's monthly target profit is $18,600, 4,300 units sales is needed

Explanation:

Using  The Contribution Margin Approach:  

Contribution Margin = Sales expense - variable expense

=$150.00 - $57.00

=$93

Contribution Margin Ratio= Contribution Margin/ sales expense  x 100

=93/150 x 100

= 62%

Assume the company's monthly target profit is $9,300.

A) Sales to attain the target profit = [(Fixed expenses + Target profit) ÷ Contribution Margin  ratio]

= ($381,300. + $9,300) ÷ 0.62

$390,600 ÷ 0.62

= $630,000

No. of units to be sold =Sales to attain the target profit/ selling price

$630,000/$150.00

=4,200 units

Assume the company's monthly target profit is $18,600

B) Sales to attain the target profit = [(Fixed expenses + Target profit) ÷ Contribution Margin  ratio]

= ($381,300. + $18,600 )÷ 0.62

$399,900 ÷ 0.62

= $645,000

No. of units to be sold =Sales to attain the target profit/ selling price

$645,000/$150.00

=4,300 units

Why are people scared of germs

Answers

The fear of getting sick or the idea that there are unwanted and unhealthy microorganisms probably doesn’t appeal to them.

will mark brainiest
In your own words, please explain how the process of meiosis leads to siblings that are not clones of each other.In your own words, please explain how the process of meiosis leads to siblings that are not clones of each other.

Answers

Explanation:

The process of cell division by which most of cells divide for growth is called mitosis.

In this process, each cell called mother cell divides to form two identical daughter cells. The daughter cells have the same number of chromosomes as mother cell. It helps in growth and repair of tissues in organisms.

Specific cells of reproductive organs or tissues in animals and plants divide to form gametes., which after fertilisation give rise to offspring.

They divide by a different process called MEIOSES.

Which involves two consecutive divisions. When a cell divides by meiosis it produces four new cells instead of just two .

The new cells only have half the number of chromosomes than that of the mother cells.

Hope you understood!

please help i give 48 points !!!which correctly lists the three layers in which water moves easily
A: ROCK, CLAY ,GRANITE
B: SOIL,ROCK,ORGANIC LAYER
C: CLAY,ORGANIC LAYER, GRANITE
D: GRANITE, ROCK, SOIL

Answers

soil, rock, organic layer

Explanation:

Permeability is the ability of a layer of rock to transmit fluid such as oil or water

The factors that affect the permeability of a rock layer includes the sizes of the rock particles, the ratio of the available voids to the solid mass of the rock, the presence of trapped air and the presence of organic matter

Rocks such as gravels, and  sparingly cemented sands have high permeability

The most impermeable of the options are granite and clay which for granite has large particle mass and contain no voids while clay has very fine particles packed together with little room for water

Therefore, water moves easily between layers  soil, rock, organic layer

Answer:

SOIL, ROCK, ORGANIC LAYER

Explanation:

Edge 2020, hope this helps :)

What are processes in cellular respiration list 3 stages

Answers

Answer:

The reactions of cellular respiration can be grouped into three stages: glycolysis, the Krebs cycle (also called the citric acid cycle), and electron transport.

Explanation:

Hope this helps you

Crown me as brainliest :)

I NEED HELP ASAP!!
Which specialized structures transport a large volume of nutrients throughout spermatophytes?
anthers
pistils
roots
veins

Answers

Answer: Veins

Explanation:

Answer: Veins.

Explanation: All spermatophytes have veins, which are structures that allow a larger volume of nutrients to be transported.

What is unique about obtaining water from an artesian well?
O The water is heated by magma or hot rocks.
O The water is found in an impermeable layer.
O The water is under pressure naturally and no pump is needed.
O Amechanical pump must be installed to bring water to the surface.

Answers

Answer:

c-The water is under pressure naturally and no pump is needed.

Explanation:

Water from Artesian well is the water is under pressure naturally and no pump is needed.

What is Artesian well?

A well from which water flows under natural pressure without the need for pumping is known as an artesian well.

It is excavated or drilled whenever a gently sinking, permeable rock layer (such as sandstone) collects water at a level higher than the ground surface at the well site.

Water goes down into the aquifer (water-bearing layer) at the outcrop, but is blocked from escaping by impermeable rock layers above and below it (such as shale).

Water is forced to the surface of a well drilled down into the aquifer by the weight of the water (hydrostatic pressure) the pressure for the continuous up flow is maintained by the continued penetration of water into the aquifer at the intake region.

The ability to collect water is what distinguishes artesian wells.

The water is under pressure naturally and no pump is needed.

Pumping water isn't essential because there isn't any pressure in the water.

Hence, the correct option is C.

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