In rats, black eyes (B) are dominant to red eyes (b). If a rat that is heterozygous for eye color is crossed with a red-eyed rat, what will the phenotype ratio of their offspring be?

Which best describes red blood cells? a. they are colorless b. they protect against disease-carrying microorganisms c. they transport oxygen throughout the body d. they aid in blood clotting

Which describes how weathering and erosion are different? weathering is caused by water. erosion is caused by wind and ice. erosion transports sediments. weathering is a natural process.

Identify the various levels of atmosphere. troposphere mesosphere exosphere stratosphere thermosphere