<span>The following statements explain how oxygen was introduced into the earliest atmosphere of the Earth and how the presence of oxygen affected life on Earth.
</span><span>
B) Oxygen is needed to carry out many life processes. The addition of oxygen to the earth's atmosphere assisted with the development of eukaryotic organisms.
</span>
D) Photosynthesis was carried out as cyanobacteria evolved. Oxygen is a product of photosynthesis.
Answer:
ionic bond
Explanation:
When two ions transfer electrons or bond together they make an ionic bond.
Simple....
as you've learned... cells create tissue..tissue creates organs...organs create organ systems..and organ systems create organisms. They all work together to create something...
An example:
muscle cell-->>muscle tissue-->>heart-->>circulatory system-->>the circulatory system makes up a part of the body.
Thus, your answer.
Answer:
Lack of food, increase in predators, lack of space, too much competition within the population, lack of water
Explanation:
