There are 4,000 units of energy available to grass at the first trophic level of an ecosystem. If the grass is eaten by a mouse and the mouse is eating by an owl how many units of energy will be left for the bobcat that eventually eats the owl

Which of the following efforts to control a virus would be ineffective? A. The use of antibiotics B. The use of vaccines C. Handwashing D. Avoiding contact with infected individuals

Organelle that changes chemical energy in food into usable compounds?

Match each business function with it's description

Why is movement important for animals?

Which Organelle breaks down rugs molecules that supply energy to the cell

Which one question can be answered using the scientific process? A-should grocery stores be forced to use paper bags B-how much water does it take to make a plastic bag C-should the government be allowed to ban plastic bags D-how should people be

What are the 7 primary organs tissues for lymphatic

What term is used to describe the number of individuals per unit area? A. carrying capacity B. population density C. population coverage

What organic molecule is most important as the source of building blocks for cell structure and least important it's role as an energy source

Which statement is correct about two objects that have gravitational force? A. They have mass B. They move slowly C. They are round in shape D. They have high temperature