Which question cannot be answered by science? (4 points) a
Why do rainbows appear after rain storms?

b
Which plants grow in the desert?

c
Why should endangered animals be protected?

d
What is the hardest element on Earth?

What happened in 2012 and how does it illustrate the importance of understanding the sun and how it works?

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.

Select all of the statements which are true. electrons are located in shells or orbits around the atom. electrons orbit slowly around the atom. electrons travel in one flat path around the nucleus of an atom. the valence of an atom is determined by the number of electrons in the atom's outermost shell.