Answer: Darwin spent five years on his journey as the ship's naturalist on the H.M.S. Beagle. Some of the evidence he used to support his theory was based on fossils he saw in South America. In the 1800's, most people were of the belief that the world was only a few thousand years old and that organisms that existed were unchanged since the beginning. However, the fossil evidence that he found showed giant versions of modern animals that no longer existed. It pointed to the idea of an ancestor that may have changed over time to the modern life forms that exist today. He also noted that the most likely place that the life forms on the Galapagos Islands could have come from originally, was Equador which was about 600 miles away. Differences in environment, food supply, temperature, etc. would put different pressures on animals on each of the various islands. Over time, natural selection would favor those best adapted for their various environments and after two million years, you have many different species that have evolved from common ancestors in Equador. The most famous of course, are Darwin's finches. Also famous are the different giant tortoises that vary by shells, size and habits, from island to island. Other famous animals include iguanas. One is extremely unique, the marine iguana, which is the only marine iguana in the entire world.
Explanation:
The correct option is B.
There are many housekeeping rules that one has to observe when one is working in the laboratory in order to ensure safety. One of these rules is that one should take precaution not to accumulate clutters on the work bench. Littering the work bench with clutters will limit the amount of space that one has to work and these clutters can constitute dangers, for instances, clutter can hinder access to emergency equipment during emergency situations. It is important that laboratory working bench should be kept clean and tidy at all time.
Answer:
It isn't.
Explanation:
It is a counting unit for "things" — atoms, molecules, ions, etc. — and these things all have different masses.
For example, a chemist may know that one atom of Cu reacts with one atom of S to form one molecule of CuS.
Cu + S ⟶ CuS
She knows that 1 mol of Cu (6.022 × 10²³ atoms of Cu) has a mass of 63.55 g and 1 mol of S (6.022 × 10²³ atoms of S) has a mass of 32.06 g.
By measuring out 63.55 g of Cu and 32.06 g of S, she knows that there are just enough atoms of each element to react with each other.
Thus, the mole has enabled her to count atoms.
I believe this question is not complete, however, I'll tell you how to solve this type of questions and you can apply on the numbers you have.
Suppose an individual has an amount of money x and wants to donate 0.125% of this amount to charity
Therefore, to know the amount donated, you can simply calculate it as follows:
amount donated (y) = (0.125/100)*x
The amount left to the individual would then be:
amount left = x - y
To better understand this, I'll just assume that the net worth is $<span>8.22x10^10, therefore:
amount donated to charity = (0.125/100) * </span><span>8.22 * 10^10 = $1.0275x10^8
amount left = </span>8.22x10^10 - 1.0275x10^8 = $8.209x10^10
