The two basic and opposite actions that account for all muscle movements are contraction and extension.

true or false

A team of environmental biologists is studying the concentration of mercury in tilefish. They catch 200 tilefish in the same area in the Gulf of Mexico, and take muscle tissue samples from an identical site in each fish.

Is there gravitational force between two students sitting in a classroom? If so, explain why you don't observe any effects of this force.

This is the average temperature for the entire year at any specific location. This is one of the factors in distinguishing one biome from another.

The lifecycle of a flowering plant starts again when a mature plant produce what?

Once inside the erythrocyte, the merozoite enlarges and becomes a ring trophozoite. The trophozoite's nucleus divides asexually to produce a multinucleate schizont. What process occurs for the trophozoite to become the schizont?

What is the primary difference between acute illness and chronic illness?

This is the only part of a dna/rna nucleotide that changes. it is found along with the 5-carbon sugar and the phosphate group.

The mineral particles found in the layers of a soil, including the topsoil and subsoil layers, were originally weathered from A. the soil's humus. B. organisms living in the soil. C. the soil's parent material. D. the soil's groundwater.

All ecosystems are affected by wildfires equally.

In order for an electrical message to be sent from the axon of one neuron to the dendrite of another neuron, it must transverse a space called the