1. In the first step in the life cycle of a star, it is called a:

A. red giant

B. main sequence period

C. protostar

D. white dwarf

In an experiment, the factor that changes in response to the manipulation of the independent variable is the O experimental group O constant O control group dependent variable

Which bones are pivot joints?

How many pairs of ribs articulate directly with the sternum? 12 5 8 7?

How do mass movement impact people? a) they can use damage to property, sometimes even burying villages b) they are two slow to causes any impacts C) Mass movement are too slow to result in loss of lives D) homes are always built strong enough to

In an ecosystem, which is NOT a density- dependent limiting factor? A) predation B) parasitism C) competition D) natural disaster

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Roentgens are used to measure the amount of: A) uranium, B) fuel burned, C) radiation, D) hydrogen isotopes

From what specific substance in air does most of the mass of sugar come from

A frame shift mutation is a genetic mutation that is caused by the insertion or deletion of a specific number of nucleotides that shifts the reading frame of the sequence.

The shallow boarder area surrounding major land masses is called?