Caddisfly larvae prefer to live in clean, clear water. Thus, the presence of these larvae can be used to determine the stream's ... A. flow rate. B. water quality. C. concentration of dissolved oxygen. D. biodiversity.

What term best describes the rock outer layer of the Earth?

Which of these is a waste material that is removed from the human body by the respiratory system?

When looking through a microscope, you observe a cell that has cytoplasm and a cell wall. Which structure would you look for to determine if the cell is a prokaryote or eukaryote? A. Ribosomes B. Nucleus C. Cell membrane D. DNA

What is the method of locomotion of cyclops

A student is determining the influence of different types of food on growth rates in spiders. She feeds one group of spiders two caterpillars twice a week. The other group receives similarly-sized beetles twice a week.

How would the ecosystem be affected if your top predators were hunted to extinction

3 ways that living creatures use lipids

Absolute dating can be determined by which of the following. Select all that apply. A. tree-ring patterns B. Earth's magnetic field C. a historian's journal D. coral growth cycle E. radioactivity F. photo comparison

What conditions cause the contractile vacuole to fill with water?

Which of the following is most likely responsible for the fact that organic molecules no longer formed spontaneously on Earth? A. The amount of UV radiation increased B. The amount of oxygen in the atmosphere increased C.