Answer:
Explanation:
A sperm and an egg each contain one set of 23 chromosomes. When the sperm fertilizes the egg, two copies of each chromosome are present (and therefore two copies of each gene), and so an embryo forms.
Well too much oxygen can kill humans which is one. And 2 If the whole atmosphere was oxygen then things will burn easily.
B.)Nuclear energy use can decrease soil quality through waste products from mining and production processes.
Answer: Amazon are the largest rainforests in the world.
Explanation:
The Amazon Rainforests are located in the northern South America. The following are the ways in which the Amazon rainforests are important to the world.
1. The Amazon Rainforests can regulate the major cycles like water cycle, carbon cycle and oxygen cycle necessary for maintaining the aesthetic qualities of the environment. These are also necessary for maintaining the weather patterns. These phenomena makes the earth habitable.
2. These forests provides accommodation to 30 million native people. These forests are also the source of 10% if the total world's biodiversity.
Sneezing causes the release of endorphins, which are hormones that trigger the brain's pleasure center, thus giving us a brief “feel good” effect
