Yes, we should get involved if a species is disappearing since it would disrupt the balance of nature, which means that there could be an overpopulation of species or the disappearance of a species could result in a disappearance of another species.
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Answer:
The correct answer is -
A. 2.6 × 10^9 years.
B. two half-lives.
Explanation:
According to the question, the half-life of potassium-40 is, 1.3 × 10^9 years, which means it takes 1.3 billion years to decay or disintegrate half of the initial amount of the potassium.
The half-life of K-40 = 1.3 × 10^9
The number of half-life, => (1/2)^2 = 1/4 (25% =1/4)
n = 2
number of half life = two
the time it takes = n*half lifetime
= 2 *1.3 × 10^9
=2.6 × 10^9 years.
Answer:
The answer is that NE injection has inhibitory effects on the paraventricular nucleus VPN.
Explanation:
It can be said that the destruction of the paraventricular nucleus (PVN) would produce a hyperphagia, on the other hand, the injection of norepinephrine (NE) would increase the feeding in the rats. This is because NE injection has inhibitory effects on the paraventricular nucleus. If neuronal activation in the paraventricular nucleus is increased, food intake by rats would be decreased.
Two (Genetically identical cells)
Answer:
223G
Explanation:
Go from big to small 200, then 20, then 3 g, I can see ur pointer blocking the 3
