According to the graph, which renewable energy resource did the United States use MOST during 2007? A) biomass B) petroleum C) natural gas D) hydroelectric

Which biological macromolecule is made up of monomers like the one shown below? A. Lipid B. Nucleic acid C. Protein D. Carbohydrate

What are the 4 major adaptations that plants needed to evolve in order to live on land instead of in water?

The change that occurred in peppered moths is an example of a. overproduction b. natural selection c. migration d. isolation

What happens to your pulse when you run

Darwin developed the theory of evolution. Which of these observation is the best evidence for the theory of evolution? Humans have very diverse traits today. B) There appear to be missing links in the evolutionary chain.

What organic substance cuts DNA into different sized fragments?

Which requirement is essential for many of chemical process that occur in cells to take place

A 200 - gram sample of a radioactive nuclide is left to decay for 30 hours. At the end of 30 hours only a 100 g of the sample is left. What is the half life of the nuclide sample

How can I measure the ripeness of a banana through sugar content or softness for my science experiment?

Which species is this butterfly? Mystery butterfly 3 Butterfly dichotomous key A. Papilio glaucus B. Papilio polyxenes C. Danaus plexippus D. Colias philodice