I believe the answer is "A. almost zero."
Even though you haven't put the rest of the question, I assume it asks what the "weight" of an electron is in comparison to neutrons and protons.
Lithosphere-the rigid outer part of the earth, consisting of the crust and upper mantle.
Mantle -The mantle is a layer inside a planetary body bounded below by a core and above by a crust. Mantles are made of rock or ices, and are generally the largest and most massive layer of the planetary body. Mantles are characteristic of planetary bodies that have undergone differentiation by density.
Hopefully this helped hun !Have a good day!
For the answer to the question above.
It is False, because Calcium is a 2+ cation, while Iodine has only a 1- anion. You need two Iodines to fill calcium's outermost shell.
I hope my answer helped you in some ways.
A the choices could be sprinkler method , drip irrigation and valves
Answer:
Genetic drift
Explanation:
Genetic drift is a change in genetic allele frequencies of a population. Bottleneck effect, caused by disasters such as in this case, causes genetic drift in a very rapid way hence reducing variability in a population. Reduced genetic variability in a small population is especially threatening because the chances of population surviving environmental changes get slimmer. This is because natural selection acts of genetic variability to get a population to adapt to changes in the environment.