Why do plants need nitrogen?

What is Species and gave at least 3 examples

Hemlocks are a common type of tree in the northern forests of the United States. In studying one forest, a forester noticed that mature hemlocks were abundant but there were very few young hemlocks. She wondered why there were so few young hemlocks.

The urinary system is important to your body's proper functioning. Which of these describes the function (s) of the urinary system? A. aids in reproduction B. breaks down solid food C. stores important nutrients and vitamins D.

As a food handler you are asked to prepare a salad but have a small cut on your hand. You should

A 10 month old infant has poor weight gain, a persistent cough, and a history of several bouts of pneumonitis. The mother describes the child as having very large, foul-smelling stools for months.

How is digestion different in the small and the large intestine?

How does the presence of a oncogene lead to the formation of a tumor

Why is a cells DNA like the books in a library

In humans the allele for albinism is recessive to the allele for normal skin pigmentation. If two parents are heterozygous, what is the parents genotype?

What is the outer edge of a frog blood cell called?