Which of the following is not a function of earth's atmosphere? a. provides carbon dioxide for plants b. provides oxygen for plants and animals c. keeps volcanoes from erupting too much d. keeps earth's surface at a comfortable temperature

What re the two main phrases of the cell cycle.

The phylogenetic tree illustrates the relationship between humans and our closest living relatives. the tree was based on biochemical comparisons, including dna and amino acid sequences. according to the biomolecular data, we could infer that a) the four organisms do not have a common ancestor. b) humans are more closely related to chimps than any other apes. c) chimps are more closely related to gorillas than they are to humans. eliminate d) there is no evidence if any relationship between the four branches on the tree.

Which of the following describes the difference in stimuli required to detect a difference between the stimuli? a. just noticeableb. signal detectionc. subliminald. top down