Slate, Skarn, Marble, and Quartzite are Metamorphic Rocks.
BUT SKARN is the type of rock that does not belong in the same category as the others.
Slate metamorphosed from mudstone. Marble metamorphosed from limestone. Quartzite metamorphosed from sandstone. All these rocks retain their solid forms.
Skarn<span> is a metasomatic rock composed of calc-silicate minerals.
Skarn is formed at the contact zone between carbonate rocks and silicic
magma. Skarn is often rich in hydrothermal ore minerals.</span> Skarn as a metamorphic rock is dissolved under metasomatic process and hardens back into a rock.
In prophase 1:
Chromosomes become visible, crossing-over occurs, the nucleolus disappears, the meiotic spindle forms, and the nuclear envelope disappears.
In metaphase 1:
The pairs of chromosomes (bivalents) become arranged on the metaphase plate and are attached to the now fully formed meiotic spindle. The centrioles are at opposite poles of the cell.
Answer:
The correct answer is - They have substances that counteract acids or bases to prevent the pH from changing
Explanation:
All living organisms including humans are water-based systems, which implies that they rely intensely upon liquid equilibria, particularly acid-base equilibria. Hence, all the acid-base and pH ideas we have talked about so far are critical to the chemistry of organic or biological systems.
This is particularly significant for enzyme, which are proteins that go about as catalysts for all major biological reactions. Most enzymes just work inside a specific pH range. Because all natural cycles are subject to pH, cells and creatures must keep up a particular and consistent pH so as to keep their compounds in the ideal condition of protonation they have specific substances that counteract the acid and base to maintain pH.
for instance:
The pH of the Cytoplasm is maintained by the phosphate ion
The pH of the blood is regulated by the bicarbonate ion
Answer/ Explanation:
If an animal is more visible to predators, it is more likely to be caught and killed than an animal that is more hidden.
Therefore, in this case, light green frogs will be caught by predators more often. This reduces their likelihood of surviving to reproductive age and being able to pass their genes on to their offspring.
In contrast, frogs that are dark green will be more able to avoid predators, increasing their chance of being able to pass their genes on to offspring.
Therefore, if there are more green frogs reproducing and passing their information on to the next generation, then there will be an increased frequency of the alleles responsible for producing a dark green colour, whereas the alleles for the light green colour will reduce in frequency. This how the process of natural selection occurs.