What is the primary source of energy in a food chain

1. oxygen

2. sun

3. Carbon dioxide

4. water

What function is specific to the neuron

Why do populations of organisms fluctuate (go up and down in cycles) ? Provide an example using woves and moose.

How sterile is contact lens solution and how long does it stay sterile? see how long it takes for mold, fungi, and bacteria to culture saline. for that matter, how sterile is the inside of a person's contact lens case?

Any process used to ask and answer testable questions about observations of the natural world" defines which term? scientific consensus scientific inquiry scientific conclusion scientific hypothesis

How might geologists use core samples

After bending, can cool water be applied with rags or sponges to cool down pvc conduit and allow it to set?

What "drives" plate tectonics? A) lava B) conduction C) continental drift D) heat and convection

cancer overview cancer is characterized by the controlled growt of abnormal cells in a healthy adult millions of cells grow divide and die each day to replace worn out or dying cells or to repair injury this process is tigthly controlled should the

Which animals were unable to adapt to warmer weather

Salt and water are mixed together in a bowl. The salt dissolves. The bowl of salty water is left out on a table. After a few days, you notice that the water is gone and that the bowl is covered in salt. What can you conclude? A.