What is the land ecosystem dominated by grass?
a. tundra
b. desert
c. forest
d. grassland user:
what is the defining abiotic factor of deserts?
a. the amount of rainfall
b. the amount of soil
c. the amount of air
d. the amount of sand

What did the first language sound like

Some birds look for food near cattle and other livestock. the movement of the cattle churns up the ground, making insects available to the birds. the cattle appear to be unaffected by the presence of the birds. what kind of relationship exists between the birds and the cattle? o a. parasitism o b. commensalism o c. predation o d. mutualism

Which of the following words best matches this definition: the process in which the best adapted organisms survive and pass on their traits, while those that are not well adapted do not survive to pass on their traits. question 3 options: acquired selection natural selection artificial selection organic selection