Pain does all of the following things except a. indicate potential danger in environment b. signal presence of injury in the body c. alert body to presence of disease d. warn the body about a natural disaster

The correct answer would be D. warn the body about a natural disaster

The pain refers to the unpleasant physical sensation which is associated with illness or injury.

Thus, pain has used a sign or symptom which indicates the presence of disease or illness in the body. It may also indicate the potential danger in the environment.

For example, lack of oxygen in the atmosphere, extreme cold temperature et cetera may cause pain.

However, body pain has no direct or indirect link with the presence of a natural disaster.

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.

hope this .. .

label a cell membrane

label b cytoplasm

label c ribosomes

label d dna

the membrane forms the outside of the cell

cytoplasm is the liquid within

ribosomes are the components within that distribute rna

the dna is the genetic make-up