A certain atom has an atomic number of four. how many protons does it have?

a. 0b. 4c. 8d. 2

DNA is a nucleic Acid that is responsible for both our genotype and our phenotype. Which of the following is the building block of DNA?

Which group of minerals are the most abundant in the earth's crust?

When did outdoor air pollution first became a significant problem was it the revolution

Which is an active transport process? simple diffusion bulk filtration osmosis facilitated diffusion ion pump?

How are carbs and lipids similar?

The process where sediments turn into a sedimentary rock through compaction or cementation is called

Which group of microorganisms is most likely to spoil a freshwater trout preserved with salt? A) Psychrophiles B) Facultative halophiles C) Anaerobes D) Thermophiles E) Hyperthermophiles

What is unique about dogs?

3. The best thing you can do to keep a positive relationship with your supervisor is to

What contains both communities and ecosystems?