Aspectrum for a given element is unique for that element. why is that so?
a. no element has more than 2 electrons in the first shell.
b. each element has an unique arrangment of electrons
c. atoms of different elements have different masses
d. atom nuclei contains no electrons

Identify the image that doesn’t depict a reproductive strategy. 1st image: a bird feeding their young residing in a nest. 2nd image: a lioness nestled with her young. 3rd image: leaves of a tree during the day time. 4th image: a fish gazing up at what appears to be bubbles or mosquito eggs.

If you have a difficult time knowing where your hand is without looking at it you may be having a problem with your what ?

An animal cell (left) and a plant cell (right) are shown.which organelle, labeled x in the diagram, is found in both plant and animal cells?