Which two atoms form a covalent bond? A. A sodium and chlorine atom B. Two sodium atoms C. Two oxygen atoms D. An iron and oxygen atom

Habitat destruction can result in a loss of? A. Species B. Air C. Energy

Colored aleurone in the kernels of corn is due to the dominant allele R. The recessive allele r, when homozygous, produces colorless aleurone. The plant color (not the kernel color) is controlled by another gene with two alleles, Y and y.

Describe the relationship between climate change and global warming.

What are the requirements of becoming a kindergarten teacher?

How much of the human body is made up of skeletal muscle

Explain how a blood glucose concentration of 7.5 mmol dm-3 would be brought back to normal in the body of a mammal and why this is a negative feedback mechanism

What is the salinity of ocean water

Which of the following could describe a population that is decreasing in size

Which creature cannot survive in the presence of oxygen? Give Examples. What does the creature need to survive instead of oxygen?

Why nitrogen must cycle through an ecosystem