<span>A gradual increase in atmospheric carbon dioxide would warm earths atmosphere becuse carbon dioxide is <em>a greenhouse gas</em></span>
Second option- because if there is too much of the owls, it will be imbalanced and the mouse population will go down
the one that is considered a chemcial mutagen is : Tobacco Chemical mutagen refer to the substance that affected the DNA of those who consume the substancce or their offspring. Studies showed that consuming tobacco has proven to created DNA deformations for the fetus if it consumed by pregnant women.
For centuries scientists thought the Universe always existed in a largely unchanged form, run like clockwork thanks to the laws of physics. But a Belgian priest and scientist called George Lemaitre put forward another idea. In 1927, he proposed that the Universe began as a large, pregnant and primeval atom, exploding and sending out the smaller atoms that we see today.
His idea went largely unnoticed. But in 1929 astronomer Edwin Hubble discovered that the Universe isn’t static but is in fact expanding. If so, some scientists reasoned that if you rewound the Universe's life then at some point it should have existed as a tiny, dense point. Critics dismissed this: the celebrated astronomer Fred Hoyle sarcastically called this concept the “Big Bang Theory"
The answer that best fits the description above is the hormone GLUCOCORTICOID. This was according to Hans Selye, an Austrian-Canadian endocrinologist. According to him, ill health induced by exposure of chronic stress is due to the secretion of the hormone glucocorticoid.
