Answer:
write the one word answers/their function for the description given
for example, answer 1)
Phloem cells that surround sieve tube elements. The tough covering of the root tip that protects the meristem. The part of the plant structure containing apical meristem tissue that can produce new stems and leaves. The central region of a root that includes the vascular tissue -- xylem and phloem.
The land and the aquatic are the two types of global food webs
Dominant allele is represented by a capital letter and recessive allele is represented by a lower case letter
A stimulus is an event or activity that can produce a physiologic response.
Same as your given meaning above, "to goad, urge or prod" is to induce or elicit a response from something. And just like the action of a stimulus, it can provoke a reaction. This can happen inside or outside of the body.
Answer:
a. Species A survived because of its widespread range including some areas that were not as affected by mass extinction.
Explanation:
The species distribution might confer extinction resistance during massive extinction events. One of the most important reasons for a species -or any other taxonomic group- to survive massive extinction is its wide distribution area.
The broad geographical range of a group -as Species A in the example- enhances the survival chances during mass extinctions. When the event occurs, it severely affects most individuals of a certain area. If the species is restricted to that area, then the species will probably disappear, no matter the number of individuals living there.
But if the species is widely distributed, there are more survival chances. The extinction event will only affect a few regions, but not all of them, meaning that some of the individuals of the species will be able to survive.
Probably as only a few individuals of species A got to survive, they must have suffered the effects of genetic drift after the disaster, causing a reduction in genetic variability.
