Protein synthesis begins with the manufacture of which molecule. A) mRNA B) rRNA C) tRNA

Until weather, climate

Which contains large amounts of complex carbohydrates? a honey b milk c vegetables d candy bar?

If pine cones are placed in water, they close up. But they open up in warm and dry conditions. How do pine cones benefit from this characteristic?

How does access to sunlight affect the biodiversity of a river ecosystem? a. Sediment is limited in areas with little access to sunlight. b. Plant and animal life is limited in areas with little access to sunlight. c.

How does the human body keep warm on a cold day? A. it converts chemical potential energy into thermal energy B. it converts thermal kinetic energy into potential energy C. it converts thermal potential energy into thermal kinetic energy D.

Using directional references for a person in anatomical position, how would you describe the relationship of the hand compared to the elbow? To the groin

In an appropriately designed experiment, a scientist is able to test the effect of: A) a single variable B) multiple variables C) the hypothesis D) scientific observations

Which answer is not a mechanism for evolution1. Mutations 2. Natural Selections3. Genetic Drift 4. Gene Pool?

In addition to fossil evidence for evolution, other lines of evidence can include:

Why do arteries have more muscle and elastic tissue than veins?