What is the original source of all energy for living organisms?

As you hike from the highest elevation to the lowest elevation, you find three different species of related mice. None of them are found at the same elevation, and the vegetation changes at each elevation level.

On the periodic table, elements are grouped in columns with other elements that share ___. A) The same atomic mass B) The same atomic number C) Similar chemical properties D) The same number of neutrons

Would a rose petal cell be eukaryotic or prokaryotic? I know that prokaryotic is unicellular and eukaryotic is mostly multicellular.

Why would a diet low in carbohydrates be dangerous

Would you cut the number of baths or showers you take in half if you knew it could improve the quality of water in your area? What are the pros and cons of your choice?

What are two ways that crossing over contributes to genetic variation

What would happen if hydrogen bonds form between any two nitrogenous bases in dna

Use the drop-down menus to complete each statement. The___controls land for oil and gas development. The___ensures that federal wildlife laws are followed. The___protects ecosystems and supervises public access to forests.

How is the skeletal system like a storehouse

Why do most coastal locations experience two high tides and seperated by two low tides