Describe 3 causes of genetic variation in a population

What 3 parts make up the circulatory system

Select all the correct answers. What are the purposes of a prologue in a play? -to provide information about the inner thoughts and feelings of a character -to set the mood and tone of the play and provide background information -to provide

What is required for a proposed explanation to become accepted as a theory

Which of the following statements is true? a) very fertile soil is found near the top of a mountain b) moisture is the least important climatic factor in soil formation c) hydrogen ions make soil fertile and loamy d) soil is made from rock and

Why are there so few plants that live at the ground level of the tropical rainforest?

Which of the following describes a relationship of commensalism? A. Oxpecker birds eat parasitic ticks off the backs of zebras B. The tapeworm latches itself in the intestines of a rat feeding off all the nutrients eaten by the rat C.

A substance directly involved in cellular communication within the human body

Scientists try to predict the location of major earthquakes based on which of the following? location of fault zones location of a mountain location of an ocean location of the science lab

What Are The Branches Of Botany?

Rocks, temperature, and water ARE what part of the environment