Streptococcus pneumoniae is a kind of bacterium that what? a. causes infections in humans. b. causes several types of cancer. c. supports the human immune system. d. aids in the digestion of food

How do tides affect the organisms living in intertidal zones? a. no organisms live in intertidal zones due to the tumultuous environment. b. the mechanical forces of the waves keeps the organisms clean. c. only plants live in intertidal zones because the animals float away with the waves and never return. d. the mechanical forces of the waves can dislodge the organisms from their habitat.

Based on the data in your tables, did the light-colored moths have a higher or lower survival rate after the industrial revolution?

Asquirrel population lives in an area. over many years, a river in that area grows wider and stronger, eventually forming a canyon. the squirrel populations on the two sides of the canyon can no longer mate with each other and ultimately form distinct species. this is an example of