Respond to the following based on your reading. What's the difference between an ionic bond and a covalent bond?

An electric current is trying to move through an atom. How do protons and electrons impact the movement of electricity?

Match the term on the left with its definition on the right.

Term Definition

3. Carbohydrate
a. Molecule that's a source of energy in the body

4. Nucleic acid
b. Many structures and enzymes in the body are made of these

5. Lipids
c. One substance that makes up cell membranes

6. Proteins
d. The molecule that carries the genetic material in the cell

I don't know i jus need points

Explanation:

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relative dating involves things like higher layers are most recent than rocks lower in the sequence. this can be extended to the known sequence of fossils. rocks containing rabbit fossils are later than those containing dinosaur fossils.  

absolute dating methods mainly use radioactive elements that have known rates of decay and produce recognizable products. for example potassium 40 decays to produce argon. once a rock has solidified the argon is trapped. by measuring the argon and potassium0 you can get an accurate number for the age.  

some other methods are good for archaeological ages. dendrochronology involves recognizing the sequence of tree rings. the orientation of magnetized particles in baked clay can be used to date a fire.

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