Answer:
<em>Like every other organism the population size of the humans have increased over time.</em>
Explanation:
With the improvements in science and technology, life becomes better and better for human beings. In the past, when there were no discoveries for curing diseases, the human population declined because of the spread of various diseases and famine conditions.
But as the developments in the scientific world are made, it has been easier to cure diseases and other problems. As a result, the population size of the human goes on increasing.
Answer:
If there are no plants in the tank, they will run out of oxygen because there is nothing producing oxygen.
Explanation:
The left ventricle must contract with more force in order to send blood to the body's extremities
I hope this helps! I'm happy to answer any other questions you might have :)
The highest potential of the 4 organic molecules found in living beings are nucleic acid, proteins, carbohydrates and lipids.