Hey. The first sound is the "lub." This is what you hear once the mitral and tricuspid valves of the heart close, which are the valves between the atria and the ventricles! Super cool. It is your third answer choice.
<u><em>22% percentage</em></u><em> of precipitation falls back onto land.</em>
Answer: D. 22%
Explanation:
Water cycle is the phenomenon in which both evaporation and condensation or precipitation of water takes place. Water evaporates from the lakes, ponds, oceans and other water bodies to the atmosphere because of the heat.
The evaporated water or water vapour then form clouds which gets precipitated or condensed and falls back to the land in the form of rain, snow, hail storm, sleet etc.
However, all the forms that fall into the land have one thing in common i.e., all of them come from clouds as the clouds get heavy by the evaporated water.
scientific theory consists of one or more hypotheses that have been supported through repeated testing. Theories are one of the pinnacles of science and are widely accepted in the scientific community as being true. A theory must never be shown to be wrong; if it is, the theory is disproven. Theories can also evolve. This doesn’t mean the old theory was wrong. It just wasn’t complete.
Answer:
The correct answer is - B. plenty of sunlight
Explanation:
Abiotic factor in an ecosystem is a factor that shapes its environment such as temperature, water, sunlight, and many more factors in a terrestrial ecosystem.
The ecosystem abiotic factors affect the population size in the ecosystem. Among the options sunlight that affects the whole ecosytem included herbivore, carnivore and many other aspects.
