1. two points
2.respiratory and organs
3.heart and heart
4.homogenous process/system
<span>C. gizzard. hope his helps
</span>
Answer: By definition, if the atomic number =
7
, then there are 7 protons, 7 electrons, and 8 neutrons!
Explanation:
The atomic number is by definition the number of protons, positively charged particles, contained within the atomic nucleus. So if there are 7 protons, there MUST be 7 electrons, 7 negatively charged particles. Why? Because matter is electrically neutral, and positive and negative particles must be equal.
Electrons have negligible mass; the mass number depends on the number of protons contained within the nucleus, PLUS the number of neutrons. Given that we have 15 N
, there must be 8 neutrons contained within the nucleus. does this help?
The disease caused by a uncontrolled division of abnormal cells in a part of the body!
Have a nice day!
:)
A sea sponge is what mimics a synthetic sponge