Natural selection causes populations to remain constant through changing environments populations to never change populations to change over time populations to lose their competitive advantage

Which of the following statements is true? Excessive alcohol use can cause stomach ulcers. Anorexia is the leading cause of stomach cancer. There are no negative short-term effects of alcohol use.

Rain, hail, sleet and snow are all examples of A) deposition. B) frozen water. C) precipitation. D) tornado warning signs

The melting ice cubes in the density experiment represented icebergs in the ocean. The expression "the tip of the iceberg" means you can't see most of something. Icebergs are freshwater like ice cubes.

Recessive sex-linked traits such as color blindness appears less frequently in females because A Females have fewer sex chromosomes B females do not carry alleles for sex-linked alleles C females do not transmit sex-linked alleles D females inherit

Why is the pancreas considered part of the immune system

Which phase occurs directly after G1? A. S phase B. M phase C. Cytokinesis D. G2

Which describes the correct pairing of DNA bases? O A. A with T, and C with G O B. A with A, and G with G O C. A with G, and C with T O D. A with C, and T with G

How to have self control over heart rate?

1. All of the following would result in a change in population size except A. emigration of individuals out of the population range. B. equal birth and death rates. C. immigration of individuals into the population range. D.

You have two dogs: a brown Labrador retriever and its sister, who is black. In these dogs, the B allele (black) is dominant over the b allele (brown). A bb dog is brown.