Cuáles fueron las condiciones que adquirió nuestro planeta hace miles de años que permitieron que se origine la vida.

Factors that can increase mutation rates a. high temps b. low temps c. food additives d. uv rays

Speed is the ratio of the distance of an object moves to

In a lab, scientists grew several generations of offspring of a plant using the method shown. what conclusion can you make about the offspring? a. they formed from meiosis and mitosis. b. they have half the number of chromosomes as their parent. c. they have low genetic variability among them. d. they will be able to reproduce only after they grow flowers.