Geological change will not cause a mass extinction, because it happens on a too big scale - on the scale of millions of years. During such long time, it is more likely that other causes will influence the survival of extinction of species, such as climate change or environmental disasters, and even if there is a small influence, it would not be significant next to other causes.
Answer:
Volcanic gases. (Ans A)
Explanation:
Ocean water is salty because of the presence of dissolved salt. When water contact with a rock it starts weathering processes and this process starts to dissolve the soluble elements such as sodium out of the rock.
In volcanic gases, lots of chlorine ions are present in the atmosphere, these ions easily dissolve with water and produce the large flux of chloride that splashes into the oceans. So, the most common source of chloride ions in ocean waters comes from the volcanic explosions.
Answer:
NUMEROUS DISEASES SPREAD
Explanation:
When Columbus stumbled upon the Americas, he and his crew were carrying numerous diseases, including smallpox, which killed 50% - 90% of the Native people's population.
Olivine, pyroxene, amphibole, mica, and quartz
Answer:
Multiple sources of protein promote protein synthesis after exercise, but only those with essential amino acids elevate synthesis. ... Ten grams of essential amino acids or twenty-five grams of a complete protein are sufficient to maximally stimulate protein synthesis.
Explanation:
