Which sources do scientist use to study ancient climates? Check all that apply

A) Earths orbit

B) tree rings

C) volcanoes

D) pollen grains

E) fossils

Alex's family raises fruit and vegetables for income. they live in an area that receives less than. 2 inches of rain per month. therefore they need to use an irrigation system to water their crops. where does alex live?

The law of segregation states that allele pairs separate during gamete formation. How then do we have two alleles for a trait?

How is most of the electricity in the United States generated?

Why are trace fossils used as evidence of an organisms movement behavior

A healthy cell spends most of its lifetime in

The full moon always rises at sunset and sets at sunrise. True False

Test your knowledge about the specific functions of the five types of white blood cells 1. Release histamine, which promotes inflammation. 2. The cytoplasm is a thin ring around the nucleus. 3.

Which could decrease the human carrying capacity? Question 1 options: corrupt governments energy crisis epidemic disease unequally distributed resources

Explain how a trait might seem to "disappear" for a generation, and then "reappear" in the following generation

What neurotransmitter is released by the axon of a sympathetic preganglionic neuron to communicate with the sympathetic postganglionic neuron?