Many factors affect soil fertility. One biotic factor would be the

A) mineral content of the soil.

B) moisture content of the soil.

C) number of earthworms in the soil.

D) presence or absence of toxic chemicals.

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What role does voltage play in the formation or use of an electromagnet? If you were able to keep the electromagnet that you created in your laboratory activity, what would be two possible uses for the electromagnet?

Which characteristic of calcium is most closely related to its chemical reactivity? The 20 protons in each atom of calcium The density of calcium, which is 1.54 g/cm3 The atomic mass of calcium, which is 40.

All the animals trees and plants are made up of cells that share many similar characteristics

What must occur for a scientific theory to be accepted by the scientific community?

Fever is the most serious symptom of a systemic infection. True False

Describe what it means for a field of study to be considered a science

Why are organisms that have organs classified as more complex than organisms without organs?

What is the final energy source that the muscles need in order to move? fat, sugar, ATP, or glycogen

What provides clues about the ocean and climate including the type of marine life presented? A. the density, temp, and salinity of ocean water. B. the volume, density, and salinity of the ocean water C. the mass, volume, and density in ocean water D.

Cancer is a disease that involves uncontrolled cell division caused by a genetic mutation. It can occur in almost any region in the body. So, cancer is essentially uncontrolled (a. Meiosis b. Mitosis c. Regeneration) of (a. Enbryonic stem cells b.