PLEASE HELP Match the following
1. A negatively charge ion
Inorganic
2. A positively charged ion
pH
3. A bond formed from the sharing of electrons
Valence
4. An electrically charged atom or group of atoms
lon
Organic
Anion
5. Any chemical compound not containing carbon
The number of electrons lost or gained to complete an
6.
electron's outer energy level
A bond formed by the attraction between two oppositely
7.
charged atoms
8. Any chemical compound that contains carbon
9. A measure of the hydrogen concentration of a solution
lonic Bond
Cation
Covalent Bond

Explain why in any given geographical region, women tend to have lighter skins( by 3-4% on average) than men?

Over the past 60 years, many amphibian species have experienced significant population declines and some species have become extinct. scientists suspected that local human activities such as the destruction of wetlands, regional pollution, and deforestation were the main reasons for these losses. however, research over the past 20 years reveals significant amphibian population declines in protected areas of the world, such as nature preserves and parks. these global declines suggest widespread problems including increased ultraviolet radiation, acid rain, and disease. in switzerland, for example, 14 of the 20 native amphibian species are threatened with extinction. chytridiomycosis is a fungal disease first identified in 1998 as a cause of massive amphibian deaths. in some severely impacted populations, a few individuals have survived, perhaps because of some natural resistance. if these resistant individuals continue to survive and prosper, new resistant populations might emerge. this would be an example of the founder effect artificial selection genetic drift natural selection sexual selection

Protein synthesis actually begins in the nucleus when transcribes a single gene on the dna molecule is copied. the process of copying this gene is called this copy is known as and contains the protein building instructions. this copy is sent out into the cytoplasm to the part of the cell known as the the of the ribosome will join together to form a functional ribosome when they attach to the mrna. as the mrna moves through the ribosome, the message is read by transfer rna brings the correct back to the ribosome. the amino acids are placed in the correct order and are hitched together by