How is atmospheric nitrogen made available to plants and animals?

A scientist wants to study the intentions of different birds in the southern part of a desert. What should the scientist do first?

The integumentary system is an organ system consisting of the skin, hair, nails, exocrine glands, and sensory nerves. what is mostly made of dense irregular connective tissue along with nervous tissue and gives the skin its strength and elasticity?

Which of the following is an example of epithelial tissue? A) Bone B) Skin C) Fat D) Muscle User: which of the following tissue types is made of cells that can expand to cross the entire human body?

Rocks from mountains on two different continents were found to have formed at the same time and to have the same composition what it could mean

Rivers change the landscape through erosion O are large bodies of contained water usually begin in low-lying valleys are usually found near the poles

Which of the following best describes a noncontact force? A. a force that is able to act at a distance B. a force that must be physically touching the object it acts on C. a force that always pulls objects backward D.

Which type of energy used on earth comes directly from the sun

Aldosterone is secreted in response to changes in: select one: a. blood potassium levels. b. blood calcium levels. c. blood pressure. d. body temperature. e. blood glucose levels

How does a mutation in dna cause a disease that affects multiple organs?

Dylan is on a strict vegan diet. He doesn't consume meat, fish, eggs, or dairy products. Which nutrient is difficult to obtain naturally from a vegan diet