This is an 8th grader question. But I'll say Xx Xy
Gravity (defined as: the force that attracts a body toward the center of the earth or toward any other physical body having mass)
Answer:
Explanation:
In gene transfer, researchers introduce a foreign gene directly into cancer cells or into surrounding tissue. The goal is that the newly inserted gene will cause the cancer cells to die or prevent cancer cells and surrounding tissue from funneling blood to tumors, depriving them of nutrients they need for survival.
Answer: temperature and precipitation