On Darwin's tree of life, organisms at the base of a branch:

A:Go extinct from environmental pressures
B:Give rise to species farther down the branch
C:Are less fit than species in the middle of the branch

Put the following processes of protein synthesis in the correct order: - dna strands unwind and separate - mrna copies dna according to complimentary base pairing - trna's anticodons bring amino acids to the corresponding mrna codons - amino acids bind to each other making a protein - mrna leaves the nucleus - a stop codon is reached, the newly formed protein is released to go do its job for the cell

What is the problem in this article? what solution does the article propose?

Ascientist is conducting an investigation that involves water, silver, carbon dioxide, and oxygen gas which group of statements best describes all of the materials he is using in the investigation?