Answer:
Changes that occur in species, over a long period of time and that include the the replacement of unfavorable characteristics by helpful variations lead to evolution (second option).
Explanation:
Evolution, in terms of biology, consists of the genetic, anatomical and functional changes that occur in individuals of different species, acquiring useful characteristics that replace unfavorable characteristics, due to processes such as natural selection, proposed by <u>Charles Darwin</u>.
<u>Biological evolution</u> raises the existence of a common ancestor, from which all current known species are known, and an evolutionary line for each of those species. Evolution is considered the basis of <u>biodiversity</u>, due to the genetic changes it has produced over many years.
Learn more:
Evolution brainly.com/question/1596703
The answer is A as corals are very delicate to their surroundings
During pulmonary edema, the interstitial space increases resulting to a smaller diffusion. The increased interstitial space makes oxygen not to have enough time to reach the red blood cell resulting to partially oxygenated blood. Using the Fick equation there will be an increase in the level of oxygen coming from the lungs.
Hypothesis is what you think will happen before the experiment, it isn't necessarily backed up by any sources or evidence. A scientific law is the observation of a phenomenon and a theory is the explanation both can be used together to back each other up.