Answer:
The last time levels of atmospheric carbon dioxide were this high came during the Pliocene Epoch, which extended from about 5.3 million to 2.6 million years ago.
Explanation:
Answer:
Mass extinctions, like the one that killed the non-bird dinosaurs, leave behind a host of empty niches — unoccupied ecological real estate. The upshot of all these processes is that mass extinctions tend to be followed by periods of rapid diversification and adaptive radiation.
Explanation:
Answer: The correct answer is C) Although the F1 generation will all show the dominant trait, the offspring will all be heterozygous and increase chances of future variation.
According to Mendelian inheritance, true breeding parents ( which are homozygous dominant and homozygous recessive) for dominant and recessive allele will always result into offsprings with heterozygous dominant genotype.
As per the question, genotype of P ( parental ) generation is AA and aa. When they are crossed together, they result into Aa offsprings, which all exhibit dominant character/ phenotype. These offsprings will increase the chances of future variation.
The two main characters in "the fault in our stars" are cancer patients. Biology is used to help find cures for diseases like these.
Answer:
A Scanning Electron microscope
Explanation:
A scanning electron micriscope beams focused rays of electrons at the outer surface of the cell get a very highly maginified and detailed image of the surface structures. Some disadvantages include that the cell must be dead in order to be examined this way, and this type of microscope is very expensive compared to a light microscope.
