What element is a gas with a mass number of 19?

Suppose 2 scientists r trying to perform an experiment that involves dangerous chemicals. How might their safety be affected by not using a common measurement?

Why is the great barrier reef considered the largest living structure

True or false: to get more whole grains in your diet, add a whole grain food such as oatmeal or brown rice to your regular diet.

How many elements have been found to occur in nature? 90 92 96 99

The hawaiian islands are an example of isolated volcanic islands. Which of the following best identifies how the Hawaiian islands are formed?

Vegetative plant organs are the root, stem, and leaf. Each organ has a specific function for the survival of the plant. Which organ is the part of the plant that supports the leaves and flowers?

Which molecule is synthesized by plants and is a major source of energy for plants and animals?

A biology student wants to understand how blood flows through the aorta. To model the heart and aorta, she sets up two identical pressure-controlled tanks that push blood through a 2-centimeter diameter tube. Her results are shown in the table below.

Which characteristic should describe all evidence collected by a scientis

What macromolecule is the primary energy source for organisms?