A group of scientists examined a meteorite from Mars and found a carbon-rich substance that is produced when microorganisms decay. They concluded that the meteorite provided evidence there was once life on Mars. Why is this an emerging idea?

Ultraviolet light can cause mutations and other damage within cells, which can hurt an individual's chance of surviving and leaving offspring. some molecules can protect cells from damage by uv. the amount of these molecules is determined by genes.

You are at a picnic and the sky is filled with cumulus clouds. is there a chance that you will get wet? yes no

What does a control group show in an experimental investigation?

Penicillium notatum is what type of organism?

Population where adults make up most of the population is most likely to experience 1 slow growth 2 rapid growth 3 increasing growth

Which choice below best shows various types of genetic material in order from simplest to most complex? a. chromosome, gene, genome b. gene, genome, chromosome c. genome, gene, chromosome d. gene, chromosome, genome?

Problems the vegetable vendors face in their job

Which statement best describes why electrons are typically not included when determining the mass of an atom? The charge of a proton cancels the charge of an electron. The protons and neutrons are much more massive than the electrons.

What did the evidence that Darwin collected during his voyage on the HMS Beagle allow him to accomplish? A. to propose the theory of artificial selection B. to propose the theory of evolution by natural selection C.

List four types of evidence used to organize organisms in systematic taxonomy