I need help on this fill in the blank question In DNA replication, A bonds with _, and C bonds with ___.

The body is protected against harmful flu viruses by

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

Acceleration is a direct result of a.) balanced forces b.) unbalanced forces c.) gravity d.) velocity