<u>Answer:</u>
Doubling time in reference to population is used to study the population growth. It projects the amount of time that the population will take to double in a particular region and it is calculated keeping in mind the annual growth rate of population of that area. This can be calculated by the rule of 70. But it is very rare that the doubling time remains the same for long and it is also rare that it changes drastically.
Oil and petroleum products i’m pretty sure
It might be conservation energy if it isn't that that I don't know what else it'd be.
Answer:
Both have similar elements in their core.
Venus and Earth are nearly the same size, have very similar masses, and have almost identical compositions.
Explanation:
Why the other answers are incorrect:
Both have a magnetic field.
This is incorrect because Venus lacks a magnetic field.
Both have only one satellite.
Earth has one moon, but Venus does not have any.
Both rotate on their axis at the same rate.
Each planet in the Solar System rotate at a different rate. Therefore, this answer choice is wrong.