Which change would create a new ecosystem? an introduced species

a dam flooding a valley

a lake freezing over

a yearly migration

Acid rain is the direct result of acid released by burning fossil fuels. select the best answer from the choices provided ot o f true or false

What are the possible blood types among the children of parents that are ab and ii? oa) types a and b ob) types a, b, and ab c) types a, b, and o od) types a, b, ab, and o

Identify any four organelles that should be present in the eukaryotic organism and describe the function of each organelle