Mammals first appeared during the <span>Mesozoic </span>era.Hope I helped, good luck!'
Answer: "flood" "fire" "explosions"
Explanation: Disasters are things that can be deadly or dangerous.
Answer:
Because they happen naturally.
Explanation:
climate changes are natural to our planet and happen over time, according to the factors that act on the planet. In this way, climate changes should not be a concern for us, the problem is the speed with which they are happening.
Human activities use a lot of fossil fuels that stick to the atmosphere and accelerate these changes, which cause serious problems in the life of the planet.
Set this up as
10 = 40 (1/2)t/28
and solve for t in years.
10/40 = (1/2)t/28
log(0.25) = (t/28) log(0.5)
t = 28 log(0.25) / log(0.5) years = 56 years
Test the answer:
56 years = 2(28 years) = 2 half-lives, so the remaining amount should be 1/2 of 1/2 of the initial amount, i.e. 1/4 of the initial amount, and 10 mg = 1/4 of 40 mg.
The Presidential Election map showed that The deep political divisions in the United States created a fractured electorate.
<h3 /><h3>What was shown by the 1860 election map?</h3>
The Democrats supported slavery in 1860 which was why they won the votes in the South. This was because the South supported slavery as their main economic industries such as cash crops, relied on enslaved labor.
The Republicans led by Abraham Lincoln were against slavery and were able to win in the North. This was because the North were against slavery for a mix of reasons with one of them being that they didn't like how cheap labor was in the South.
This showed that the political divisions in the U.S. led to a fractured electorate.
Find out more on the election of 1860 at brainly.com/question/579219
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