14. atherosclerosis, or plaque, is made up of cholesterol and other blood components that have the potential to block a. the intestines. b. the endocrine system. c. the lymphatic system. d. coronary arteries.

Which of the following is one of the four conditions necessary for natural selection to occur in a population? fewer organisms are born than the habitat can support mutation does not occur organisms have identical characteristics variation is inherited

What’s the student’s scientific question

The eruption of a nearby volcano causes a prairie ecosystem to receive a lot less sunlight. which of these is most likely effect on the ecosystem?