What is a frozen fossil?

Is dna considered to be an organic molecule? Why or why not?

Which scientist invented the veryfirst optical microscopes and was also the first person to view single celled organism living in pond water

Primary and secondary air pollutants can co-exist in the atmosphere. True False

Which one of the biomes is considered endangered? What does this mean?

What two cells are created through mitosis.

Which statement best describes the relationship between activation energy and rate of reaction? O Increasing the activation energy can increase the rate of a reaction. O Reducing the activation energy can increase the rate of a reaction.

Definition: this is a haploid cell with half the reproductive information from the parent.

Does a cell use energy when molecules diffuse in or out of the cell? Why?

Below is a list of possible challenges. Check all errors that you mentioned in your answer. Traits other than beak type might affect natural selection. It could take many generations to observe adaptions to a population.

A farmer dug a well but did not find any water Which reasons most likely explain why the farmer did not find water? Check all that apply.