Wher do the words go?

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

Has anyone taken the genetics unit test in connexus? not looking for answers, just a little bit what to expect and some with studying.

We all have different forms of genes from our parent(s).what are these different forms called? a. alleles b. characters c. dna d. resources