The phospholipid head is & (2 answers) * 1 point
Polar (+)
Hydrophilic
Hydrophobic
Uncharged

Write a paragraph explaining why the effect of mutations can vary widely - from neutral to harmful to beneficial

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 animal is a producer in this ecosystem