Answer:
Explanation:
In an atom, there is a dense center known as the nucleus. It is made up of two subatomic particles: <u>protons</u> and <u>neutrons</u>. The protons have a positive charge and the neutrons have no charge, so overall the nucleus is positively charged.
The third subatomic particles, negatively charged electrons, are located around the nucleus in a cloud.
The particles in the nucleus are 
.
A virus is not a bacteria, but it is caused by a bacteria. A virus causes the immune system to weaken.
Usually if your pulse rate is thumping at a fast pace that means you have been running or your body has been actively moving in some type of way.
Answer:
A. Producer and consumer
Explanation:
The relationship between snails and elodea is symbiotic in that the snail eats algae and produces carbon dioxide. The elodea takes in the carbon dioxide and, through photosynthesis, creates oxygen, which the snail and every living thing in the tank uses to breathe.
C is the correct answer if you look at your studies
