Which causes a drop in female hormone levels?

the onset of the menstrual flow

if an egg is released from the ovary

if the uterine wall thickens

if the egg is not fertilized

How has the study of mitosis affected scientists' knowledge of cancer? a. It led to a study of how to induce cancer cells to divide more rapidly. b. It led to an understanding of how cancer cells divide so rapidly. c.

The height of a triangle is 5 m less than its base. The area of the triangle is 42 m2 What is the length of the base? Enter your answer in the box. m Next h

Which best explains how the human body obtains energy from food? a. by inhaling oxygen into the lungs b. by removing dangerous wastes c. by exhaling carbon dioxide d. by breaking chemical bonds?

Discuss several negative effects of water pollution.

Groups of similar cells and extracellular products that carry out a common function are called

One pair of alleles controls eye color in fruit flies. More than ten different eye colors are possible, ranging from bright red to apricot to tan to white. What kind of inheritance is this? How do you know?

Assume that in squashes the difference in fruit weight between a 3-lb type and a 6-lb type results from three independently segregating allele pairs, A/a, B/b, and C/c. Each capital-letter allele contributes a half-pound to the weight of the squash.

What is another important difference between mitosis and meiosis? A. Mitosis can only occur in cells that are diploid (or have higher ploidy). B. Meiosis can only occur in cells that are diploid (or have higher ploidy). C.

What do "adduction" and "abduction" mean?

Which of the following statements about the 'Hobbits' of Flores is FALSE? Select one: a. All the answers are TRUE b. Hobbits were alive at the same time as modern Homo sapiens c.