What type of bacteria converts the ammonia and ammonium into nitrates and nitrites?

Which of the following explains why a tree is often used as a model to represent the principle of common descent

Refer to the family pedigree shown here. in generation i, one parent is affected by the gene mutation and one parent isn't. in generation ii, all three children are affected by the gene mutation. what can you conclude about this gene mutation? a. all children born in future generations will be affected by this disorder. b. this gene mutation is a dominant disorder. c. this gene mutation is a recessive disorder. d. the generation i mother is a carrier of this gene mutation.

If 360 joules of work are needed to move and create a distance of 4 m what is the weight of the crate