What do scientist use to learn about Earth's core

What are two ways that soil is often wasted? A. planting same crop in same field over and over B. not planting any crops C. smoke from factories D. car exhaust E. loose soil with no cover crop

Why is there no rock record of the Hadean period? A. Rocks only formed near subduction zones during this period. B. The lack of ozone prevented rock formation. C. Earth's temperature was too high for solid rocks to form. D.

When are expert judges needed to determine the content validity of a test? a. always b. when the trait being measures is ill-defined c. when the trait being measured is highly technical d. all of the above?

When is condensation most likely to occur?

What type of cell does not contain a nucleus enabling it to carry more hemoglobin? Leucocyte White blood cell Nerve cell Erythrocycte

Regina is a 22-year-old college student who plays on her school's soccer team. Her coach invited a registered dietitian nutritionist to talk to the team about sports nutrition.

Is a nail holding two pieces of wood together desirable or non desirable?

Which best describes the cell theory? 1. Scientists know all there is to know about cells, so the cell theory will not change. 2. As technological advancements are made, the cell theory may change. 3. A theory, once formulated, cannot be changed. 4.

What are the parts that make up nucleotide

What is the main function of vascular tissue in vascular plants? A. to cover the ground B. to move water and nutrients throughout the plant C. to provide the plant with its green coloring D. to complete photosynthesis