Why would scientists use a spectrometer in space?
A. To detect the birth and death of distant stars and galaxies
B. To maintain a constant air supply on board a space shuttle
C. To study the chemical composition of the surface of a planet
D. To convert light from stars into usable energy for humans

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.

Indicate the coat color and the proportion of offspring with that color for each of the following crosses of rabbits. assume all are homozygous. agouti x albino a) 1/2 albino, 1/2 agouti b) all agouti c) 3/4 agouti, 1/4 albino

Most animal cell membranes have proteins that pump. ions out of the cell and potassium ions into this