Select the correct answer from each drop-down menu.
sharks, whales, and dolphins share similar features such as body shape and the position of fins. however, sharks have gills for breathing, while
whales and dolphins have lungs. these differences indicate that the organisms share a common ancestor for
whales also possess a vestigial pelvic bone. the presence of the pelvis bone may indicate that whales

Based on the law of dominance, we would expect percent of the offspring from this cross to have large teeth.

Explain how the number of similarities between the embryos from early stage to late stage is used as evidence of a common ancestry

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.