P Waves (speed): They typically travel at speeds between ~1 and ~14 km/sec.
P Waves (type of motion): They compress and expand (oscillate) the ground back and forth in the direction of travel.
P Waves (type of material the wave travels through): These waves can travel through solids, liquids, and gases.
P Waves (other information): Compressional waves are also called P-Waves, (P stands for "primary") because they are always the first to arrive. They gave us the first jolt last Friday. Shear waves propagate more slowly through the Earth than compressional waves and arrive second, hence their name S- or secondary waves.
S Waves (speed): Speeds are on the order of 1 to 8 km/sec.
S Waves (type of motion): S waves produce vertical and horizontal motion on the ground surface.
S Waves (type of material the waves travel through): S waves only travel through solids.
S Waves (other information): In seismology and other areas involving elastic waves, S waves, secondary waves, or shear waves (sometimes called elastic S waves) is a type of elastic wave and are one of the two main types of elastic body waves, so named because they move through the body of an object, unlike surface waves.
(Hope it helps, please mark it as brainliest)
What risks could there be in having the vast majority of a country’s agricultural production dependent on one crop?
Answer:
Explanation:
According to a new WWF book, agriculture – the largest industry in the world – is one of the biggest threats to the environment. Inefficient food production and harmful agriculture subsidies are causing deforestation, water shortages and pollution.
Answer:
If that crop fails so would the agricultural production of said nation which could lead to famine or economic breakdown
Explanation:
When you rely on only one crop then your basically sitting on a ticking time bomb. If the crop fails and you don't have a replacement, your agriculture is disabled. If that crop is something like cotton, You loose your main export and ability to employ people. If its something like Rice then your citizens loose food which will cause famine in the lands which could lead to rebellion.
Why is it important for all the phases of growth and reproduction to proceed correctly in order for a plant species to survive?
Answer:
uuuhhh what in the world