Which of the following animals is most likely to have an open circulatory system? A. lizard B. bird C. dog D. crab

Control of gene expression in eukaryotic cells occurs at which level (s) ? ON

Animals behave in order to satisfy ___ needs.

What is a free trade area? a group of countries that share similar political and economic beliefs a group of countries that have agreed to eliminate tariffs and trade barriers a group of countries that believe their borders should be open and free a

Wanda has a particular type of diabetes that requires her to inject herself with insulin every few hours. in the context of the endocrine system, which gland is most likely responsible for wanda's diabetes?

Describe how the carbon cycle is related to food webs and energy pyramids.

What is the correct definition of a species? A. A population of creatures who all look the same B. A population of creatures who are all the same size C. A population whose members are all the same color D.

Which of the following hormones increases smooth muscle contraction?

It is important to share data from scientific experiments with others. Which of the following methods is a valid way to present collected data?

What are the characteristics of eukarya

you are studying enzymes in biology class. hydrogen peroxide (h2o2) is produced as a byproduct of respiration. hydrogen peroxide is harmful to cells and must be continually broken down.