Answer:
the answer is A on edgunuity
Explanation:
A virtual image seems to come from
A.)behind the mirror.
B.)the surface of the mirror.
C.)in front of the mirror.
Answer:
Melanin
Explanation:
Some races that are genetically programmed in such a way that the color changes according to the ambient temperature, as is the case of the Siamese cat.
Siamese cats has a gene that produces melanin (gives hair color) depending on body temperature.
This gene stops painting color when the average temperature of cats is exceeded. This absence of color (that is, white cat) causes several curiosities to occur:
1) Siamese cats that are subjected to higher temperatures, for example in summer, can develop a partial albinism.
2) Siamese babies are usually born very white, because in the mother's womb the temperature is warm. As they come in contact with the outside, the gene begins to color their fur.
3) Cat's body is colder around the ears, legs and tail. For that reason they are usually the most colored areas of the Siamese.
The idealized six-horizon soil profile is not a good representation of all soils because there are big variations, mainly because of the climate factors.
Explanation:
When a soil profile is presented, it is often the one that pretty much everyone knows, the six-horizon profile. This is not a good representation of all soils though, or rather for most of the soils, as the situation in reality is much different. This six-horizon profile is actually idealized, or rather as to how a soil profile should look like.
Lot of the soil types across the world don't have six horizons, or their depths are much different than in the idealized profile. The main reason for this is the climate, as it is the basic factor that later influences all the other ones that influence the formation of soil. We can take the desert soil and polygonal soil as examples:
- The desert soil is very poor in nutrients. The O horizon is either few mm or non-existent. It contains salts.
- The polygonal soil is also very poor in nutrients, with the O horizon also being just few mm. This soil lacks rock base, as well as depth, as it is often only few cm deep.
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He used single-lens microscopes, which he made, to make the first observations of bacteria and protozoa. His extensive research on the growth of small animals such as fleas, mussels, and eels helped disprove the theory of spontaneous generation of life.
