If element X has 15 protons, how many electrons does it have?

What is the function of mitochondria in eukaryotes

How could a pregnant woman determine whether her child could be born with albinism? a. By determining the unborn child's phenotype. b. By analyzing the sex-chromosome of the unborn child. c. By using a pedigree. d. None of the above.

What do nitrogen-fixing soil bacteria do to the nitrogen in the atmosphere?

how will the lever of carbon in the atmosphere change if humans do nothing to reduce their impact on the carbon cycle

What is the evolutionary value of mutations?

About how long is the island from the southwest corner to the northeast corner

Place the following in correct sequence from the formation of a drop of urine to its elimination from the body. 1. major calyx 2. minor calyx 3. nephron 4. urethra 5. ureter 6. collecting duct

Which of the following locations will most likely have the LEAST amount of evaporation? Amazon Jungle Florida Wetlands London, England

When fluids leak out of the cardiovascular system they are returned by the

The n = 2 shell of an atom contains a maximum of: two electrons seven electrons eight electrons eleven electrons