Radioactive material X can only be used to date young geologic material because radioactive material X

When microbial action during decomposition in aquatic ecosystems removes too much oxygen, the body of water experiences

The diagram shows a pedigree for a certain trait in three generations. The grandparents are represented at the top and the grandchildren are at the bottom. How many grandchildren in the pedigree show the trait? 0 1 3 4

They don't have a science option but: As light travels from air to water to glass, it will refract. The best explanation for this would be A) Glass is less transparent than water, which is less transparent than air.

What is each curved line around magnet A called?

Which phrase best describes the biosphere? A. Human life, oxygen, and water are found in this sphere. B. All living things on the earth are found in this sphere. C. All plants and animals on the earth are found in this sphere. D.

Scientists make two types of observations that can be either

Of the following muscle types, which has the longest muscle cells and has obvious stripes called striations? Of the following muscle types, which has the longest muscle cells and has obvious stripes called striations? a. cardiac muscle b.

Maya made the diagram below to represent ultraviolet rays, radio waves, gamma rays, and infrared rays based on their properties. Four waves labeled A, B, C, and D are shown.

The Champaign-Urbana metropolitan area (population 150,000) has long been suffering from the heinous pathogenic bacterium, Michiganious wolverinous, which causes rabid wolverine fever.

Which of the following is the strongest evidence that protein structure and function are correlated? a. Proteins can readily form hydrogen bonds with water. b. Denatured (unfolded) proteins do not function normally. c.