NEED HELP ASAP

Immediately after the cells differentiate—become particular kinds of cells—they begin to form tissues. When does heart tissue first form in a human?

A. during the third trimester of pregnancy
B. during birth
C. during the second trimester of pregnancy
D. during the first trimester of pregnancy

Drag each tile to the correct location. match each trait that an organism displays to a reproductive strategy.

Migration is a. the movement of organisms from a native location to a foreign location b. the movement of organisms from a foreign location to a native location the movement of organisms from their water supply to their food supply d. the seasonal movement of organisms between locations c. select the best answer from above

Drag the tiles to the correct boxes to complete the pairs. match the nitrogenous base of dna with its complement.