Based on the energy pyramid seen here, which group of organisms is the primary consumer?

A) predator fish

B) birds and mammals

C) insects and zooplankton

D) phytoplankton and bacteria

What is the organelle that manages or controls all the cell functions in a eukaryotic cell

What part of the cell theory explains why your skin is able to repair itself after being cut

The number of individuals of a single species per unit area is known as

As a food handler you are asked to prepare a salad but have a small cut on your hand. You should

You want to test the effect of sucralose on the growth of a plant. Design a study using the steps of the scientific method. What are the dependent and independent variables in this experiment?

All cells of the body age and are replaced in a natural order. When RBCs age, they are destroyed in the spleen. During this process, the iron from their hemoglobin is released into the circulation and returned?

During which stage of meiosis do homologous chromosome pairs line up in the middle of the cell?

In one to three sentences, describe what happens during the regeneration stage of the Calvin cycle

A science student makes the following statement. Based on the data, we determined that plant growth is affected by the type of soil. What is the student doing? A. Making a prediction B. Forming a hypothesis C. Collecting data D. Drawing a conclusion

How many does carbohydioxide get into a leaf