its hydrogen bonds.... that's really all I know
2. What field of science are homologous
structures used as evidence for?
er
O photosynthesis
O evolution
O cell theory
O big bang
what do yall look like
Answer:
FOOD
Explanation:
The teacher asked the students to design an experiment that would demonstrate that temperature will affect the pressure of a gas. Which of the following would be a valid experiment that shows the correct relationship between gas temperature and pressure?
A.
The students want to test the air pressure of bicycle tires. They check the pressure of the tires after letting the bike sit outside in very cold, winter weather for several hours. Then they bring the bike inside to a room temperature environment for several hours to warm up and check the pressure again. They find that the tires in the colder temperature showed a low pressure and that the pressure increased after the tires were able to warm up.
B.
The students want to test the air pressure of bicycle tires. They check the pressure of the tires after letting the bike sit outside in very cold, winter weather for several hours. They then bring the bike inside to a room temperature environment for several hours to warm up and then check the pressure again. They find that the colder temperature showed a high pressure in the tires and that the pressure decreased after the tires were able to warm up.
C.
The students wanted to test the air pressure in a plastic bottle of soda by comparing two bottles. They put one soda in a freezer for 12 hours and the second soda was left on the counter at room temperature for 12 hours. They found that the soda that had been in the freezer had burst, but the one on the counter was easy to squeeze and showed some give. They determined that the cold temperature had increased the pressure of the gas in the bottle causing it to burst.
D.
The students wanted to test the air presssure in a plastic bottle of soda by comparing two bottles. They put one in a freezer for 12 hours and the second soda was left on the counter at room temperature for 12 hours. They found that the pressure of the bottle which was in the freezer had remained the same. The pressure of the gas in the bottle on the counter increased, causing it to push on the sides of the bottle making it harder to squeeze.
Answer: I think its A
Explanation:
Leaves change colors when they lose
what?
A nutrients
B. glucose
C. oxygen
D. chlorophyll
Answer:
D. chlorophyll, is the best answer
Explanation:
In fall, the leaves stop their food-making process. The chlorophyll breaks down, the green color disappears, and the yellow to orange colors become visible
Hope this helps!
The blocks above represent ecosystems, with each species type designated by a different color. Which block represents the greatest diversity?
1
2
4
5
Answer: The answer is 5 (D)
Explanation:
Block 1 has only 1 different type of species
Block 2 has only 2 different types of species
Block 3 has only 2 different types of species
Block 4 has only 3 different types of species
However Block 5 has 3 different types of species, but they are all of equal size or abundance.
In Block 4 pink and blue are a minority and so the species abundance is low (while the species richness is equal to block 5), block 5 has a higher species abundance and an equal species richness than block 4.
I also just took the test and got it right
20. Frigatebirds have webbed feet and spend much
of their life flying over the ocean but never land in
the water. What does this fact suggest about the
evolution of these physical and behavioral traits?
Answer:
Evolution changes the abilities of the Frigate birds.
Explanation:
The Frigate birds have webbed feet because they live in the ocean and unable to fly due to its big weight. Before the evolution, the Frigate birds lives in the ocean due to their large body weight but with the passage of time, evolution occurs that leads to formation of flying ability in the bird so now the bird have the old characteristics of their ancestor as well as new abilities in the physical traits of the Frigate birds due to the evolution.
Pioneer species are species which colonize previously uncolonized land, usually leading to ecological succession. They are the first organisms to start the chain of events leading to a livable biosphere or ecosystem. Why is a lichen most likely to be a pioneer species?
A The mutualistic relationship of species forming a lichen allows it to survive independently.
B The lichen is fast growing and provides a nutritious food source for many other species.
C The lichen does not require sunlight to survive.
D The lichen is a decomposer that digests rocks and forms soil.
Answer: D
Explanation: Bc
20 POINTS PLEASE HELP SOON!!!!!!!
Why are sex-linked traits more common in males than females? *
A. All alleles on the X chromosome are dominant
B. All alleles on the Y chromosome are recessive
C. A recessive allele on the X chromosome will always produce the trait in a male
D. Any allele on the Y chromosome will be codominant with the matching allele on the X
Answer:
A
Explanation:
X dominants Y
Is the trend in biomass in Pyramid X the same as seen in Pyramid Y? Explain your answer.
Which of the following statements is true?
a.Carbon-14 can only be used to date rocks.
b.Oxygen speeds the decay of dead organisms.
c.Epeirogenic changes deform the crust.
d.In turbite beds, the bottom layer is older than the top layer.
Explanation:
Oxygen speeds the decay of dead organisms. -is the true statement.
carbon continuously cycles through the biosphere, changing forms. Which of the following statements accurately describes the movement of carbon?
Answer:
A
Explanation:
Maybe b but most likely A.
3. Which structure protects the developing embryo of a beech tree?
A. cotyledon
B. cuticle
C. seed coat
D. stomata
Answer:
Seed Coat
Explanation:
Which observation of a plant supports the inference that photosynthesis can take place? *
A) a strong, sweet smell
B) a rough, dry texture
C) a green color
D) a smooth stem
Answer:
C) a green color
Explanation:
the green represents the chloroplasts present in the plant that contain the chlorophyll
2. ¿Existe una sola medida eficaz para cortar la ruta de transmisión del virus en diferentes espacios?
Answer:
No existe una medida única, existe un conjunto de medidas que pueden reducir la propagación de un virus.
Explanation:
Existe una diversidad de virus diferentes con sistemas complejos que pueden causar diferentes tipos de infecciones en humanos. Hay virus que se propagan por el aire, a través de las secreciones, con tasas de infección más altas o más bajas.
Por tanto, la mejor solución para un virus que impacta en la salud de las personas, como en la situación mundial actual, la mejor solución para la contención de un virus es seguir todas las normas sanitarias informadas por las autoridades competentes y preservarse en el de la mejor manera posible, lavándose evitando circular en ambientes cerrados y manteniendo la distancia social.
Groundhogs inhabiting a meadow environment drink water and rely on plants, including clover, for food. Which of the following terms describe both the water and the clover that the groundhogs consume? Choose the two that apply.
A. limiting factors
B. abiotic factors
C. biotic factors
D. resources
The following terms describe both the water and the clover that the groundhogs consume are:
Abiotic factors Biotic factorsWhat are the factors that affect population size?The 2 main aspects affecting denizens growth are the birth rate and death rate .
People development may also be impacted by people coming into the population from someplace else or leaving the residents for another region.
Thus, option "B" and "C" is correct, Abiotic factor and Biotic factors.
To learn more about environment click here:
https://brainly.com/question/13107711
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PLEASE ITS URGENT PLEASE NO LINKS
Briefly explain how an animal's role in the agricultural industry determines its most desirable traits as livestock
Answer:
The livestock species play very important economic and socio-cultural roles for the wellbeing of rural households, such as food supply, source of income, asset saving, source of employment, soil fertility, livelihoods, transport, agricultural traction, agricultural diversification and sustainable agricultural production. The aim of this work was to identify and characterize the different roles that livestock and livestock species play in rural communities of Timor-Leste, highlighting the importance of animal production for the wellbeing and rural development, and relate the functions performed by livestock production with economic, social and cultural attributes of the communities. The data used in this study were collected in 2011 through a questionnaire survey in three rural communities in the district of Bobonaro, namely in a mountain area, an irrigation plain and a coastal zone, and were complemented with secondary data. Livestock production in Timor-Leste is predominantly familiar being chickens, pigs, goats, cattle, horses, buffaloes and sheep the main species. Beyond the economic function, each livestock species also performs social and cultural functions.
Which of the following is not true concerning tropical plantations?
a.
They are generally found in humid, tropical climates.
b.
Wheat and corn are common products of tropical plantations.
c.
Most crops from tropical plantations are exported.
d.
Cocoa, coffee and tea are common products of tropical plantations.
Please select the best answer from the choices provided
A
B
C
D
Answer:
Wheat and corn are common products of tropical plantations.
Answer:
the answer is b just took the quiz. ;)
Explanation: