Magma rises towards the earth's crust as lava and cools down and crystallizes to form rocks. true or false help

Anita thinks that she has heterozygous alleles for red hair. if she is correct, which of these diagrams best illustrates anitas alleles pf red hair

Select the correct answer from each drop-down menu. in an experiment, dr. travis examined the effects of calcium intake on osteoporosis, a condition that causes an increased risk of bone fractures. the amount of calcium is variable. the risk of bone fractures .

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