What happens to "T cells , b cells " when NK cells increase? clarification (What happens to their secretion , Decrease or increase )?

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 these is most likely to happen if parallax measurements of star distances are taken after a gap of six months? the results would be accurate the results would be inconsistent the results would not be valid the results would not be repeated

Explain what a zygote is. use the terms egg cell, sperm cell, and fertilization in your explanation.