If the element has not become an ion yet, then there is 73 electrons.
Number of protons = number of electrons**
**only when the element has not form an anion or cation.
Answer:
<u>prokaryotes</u>
Explanation:
The first living things on Earth, single-celled micro-organisms or microbes lacking a cell nucleus or cell membrane known as <u><em>prokaryotes</em></u>, seem to have first appeared on Earth almost four billion years ago, just a few hundred million years after the formation of the Earth itself.
<em>HOPE THIS HELPED </em>
<em>MARK BRAINLIEST</em>
Answer:
D
Explanation:
Because there has to be competition or one population wouldnt decrease and the other wouldn't increase due to survival and reproduction the population doesn't always have to be below the carrying capacity because it can also do it when its above and natural selection can act on traits determined by different alleles.
Answer:
1. lungs
2. skin
3. large intestine
Explanation:
lungs inhale oxygen
skin is on the outside of the body
the large intestine processes your food into feces
The answer is d. semi permeable nature of the membrane
