How do plants obtain nitrogen?

A. They remove it from the air.

B. They absorb it through their roots.

C. They fix it in their leaves.

D. They produce it in their stems.

This describes a species which makes a large percentage of an ecosystem

Which of the following is a chemical change? formation of a solid from two liquids phase change change in surface area volume change

Why is sleep deprivation bad for your health? You can end up with headaches, dizziness, or depression. You often forget your personal responsibilities. You will develop a taste for energy drinks.

Which part of a cell is the dialysis tubing most similar to?

Which of these igneous rocks would have a high sodium and silica content, be classified as continuous in crystallization, and be considered felsic? A) Amphibole B) Oligoclase C) Olivine D) Pyroxene

Which describes organs in the human body? the largest living unit a group of cells that work together to perform a common function a group of tissues that work together to perform a common function the smallest living unit

Horses and donkeys can breed and produce sterile offspring known as mules. Horses and donkeys remain separate species because of this hybrid sterility, which is: 1. an allopatric barrier to reproduction. 2. a postzygotic barrier to reproduction. 3.

A group of cells working together is known as what

What do amoeba proteus, dinoflagellate, and euglena viridis have in common? a. they all can move and make their own food b. they all can move and use eye spot to locate food c. they all can move and be heterotrophic d.

How is a scientific hypothesis best evaluated?