Explain how changes in land use can impact an ecosystem.

Nitrogen-fixing bacteria A. repair nitrogen-damaged legume roots B. convert atmospheric nitrogen into ammonia C. damage the environment by using atmospheric oxygen to produce toxic nitrogen compounds D. convert ammonia in the soil into nitrogen gas

Write on urea cycle

What gene has been called the "guardian angel of the genome?"?

Students are reviewing the concepts of phenotype and genotype as they apply to hypercholesterolemia. The students demonstrate an understanding by identifying which as characteristic of the genotype of this disease?

Which type of speciation has the potential to occur the most rapidly? a. Peripatric speciation b. Parapatric speciation c. Polyploid speciation d. Allopatric speciation

Proposed a theory to explain the origin of life on earth

How the carbon atom's bonding tendencies lead to the formation of macromolecules

Smallest planet in the solar system

What is the definition of soil according to a soil scientist?

When muscles lack oxygen this will start to build up and cause fatigue?