Answer: a. natural selection can only act on existing variation
Explanation:
Natural selection is the process of differential survival and reproduction. It occurs when a beneficial trait it passed on from the parents to the offsprings in the population of the same species. A beneficial trait will not be passed to the offspring if the trait is non heritable. The trait will be passed on as a genetic component. For example, beak length the trait for beak length or genetic variation is already present in the population. It is selected on the basis of the natural selection and can be expressed in the new generation. The natural selection process acts on the individual but the results of the selection can be seen on the entire population.
Answer:
Its supposed to be Mercury but earth too so id go for Earth "i hope this helps"
sorry if its wrong
Answer: conditioned stimulus
Explanation:
The conditioned stimulus is the part of the classical conditioning. The conditioned stimulus is a neutral stimulus and its effect remains hidden or the subject may not show any response towards it for some reasons. This stimulus becomes associated with the unconditioned stimulus to trigger the response in the stimulus. For example food is the conditioned stimulus but the smell of food is the unconditioned stimulus. The food may appear less tempting to the subject but before showing the food to the subject the smell of food may attract the subject.
The correct answer is true.
Most oil and natural gas formed where forces within Earth are folded and tilted thick rock layers, and they are also formed with plankton in which is concealed with sediment (a natural & solid material that is fertile to enrich nutrients in soils).
I hope this helps you, have a great day. :)
I believe it's lipids and carbohydrates, carbohydrates storing energy as glycogen.