Aluminum is an element. Which best describes what makes up a sample of aluminum?

one kind of atom

O two different kinds of atoms

all carbon-based atoms

a carbon atom and non-carbon atoms

A group of organisms of various kinds living in the same habitat is a (n): community ecosystem food chain environment

Lewis is exercising and his muscles need oxygen. Which best describes how systems interact to bring his body into homeostasis? The circulatory system brings oxygen to the respiratory system, which delivers oxygen to the muscular system.

In the late 1920s a mutation occured in many silver fox farms around the world. these farms that sold expensive furs were proud of the quality of their furs, and each advertised that it had the best, most pure breed of all the fox farms.

The key ingredient of an arterial fluid classified as a cosmetic fluid is a (an) ?

What is the main difference between the central nervous system (cns) and the peripheral nervous system (pns) ?

Name some proteins that are made at ribosomes.

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.