What can fossils reveal about earth past?

Answers

Answer 1

Answer: Fossils show how organisms have changed over time.
Fossils also show us how Earth itself has changed. e.g. Similar fossils have been found on both sides of the Atlantic Ocean. Many of the organisms that left these fossils could not have crossed an ocean. The finding of these fossils in distant places supports the theory of CONTINENTAL DRIFT. This is the theory that the continents have been slowly drifting apart for millions of years.

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During which geologic epoch do scientists inferthat the earliest grasses first appeared on Earth?
(1) Holocene
(2) Pleistocene
(3) Oligocene
(4) Eocene

Answers

Grasses evolved around 40 million years go, that is in the Paleogene period.

Paleogene can be divided into Oligocene, Eocene and Paleocene.
40 Millions years ago falls into Eocene - this is the correct answer.

Grasses actually appeared rather late, and other plants, including ones with flowers appeared earlier.

Answer:

Grasses evolved around 40 million years go, that is in the Paleogene period.

Paleogene can be divided into Oligocene, Eocene and Paleocene.

40 Millions years ago falls into Eocene - this is the correct answer.

Grasses actually appeared rather late, and other plants, including ones with flowers appeared earlier.

If something is refined, it means that

Answers

Answer:

D. it has been improved by having unwanted substances removed

Explanation:

I just did the test :)

The adjective Refined has 6 senses:

1. (used of persons and their behavior) cultivated and genteel
2. freed from impurities by processing
3. showing a high degree of refinement and the assurance that comes from wide social experience
4. made pure
5. suggesting taste, ease, and wealth
6. free from what is tawdry or unbecoming

Which of the following areas is the most inaccessible to humans?Papua New Guinea
Micronesia
Guam
South Pole

Answers

among the regions given in the question, South Pole is the most inaccessible to humans. The correct option among all the options that are given in the question is the last option. The weather in the South Pole is so harsh that it is almost killer conditions for normal humans and so most of the places are almost inaccessible.

Why is it 5 :30 p.m in India and 12 :00 noon in London ?

Answers

Because after the sun is 'overhead' in India, it takes roughly 5-1/2 hours
for the Earth to turn far enough to place the sun 'overhead' in London.
Our clocks are built to match what the sun appears to do.

Wind carrying sand grains deposits the sand when the wind a. speeds up.
b. crosses a depression in the ground.
c. slows down or hits an obstacle.
d. cools after nightfall.

Answers

The correct answer is - c. slows down or hits an obstacle.

The sand grains are mostly picked up and distributed by medium to strong winds. Once they start losing on speed on come to some high mountain range they slow down and there is not enough force in them to carry the sand grains anymore so they fall. The force of the wind is a determining factor as to how big of a distance the sand grains will be transported.

Example for slowing down and depositing: the sand grains from Sahara are travelling with strong winds across the Atlantic Ocean and they reach the Amazon rainforest, when they reach it, the thick cover of high trees slows down the wind and the sand grains are deposited.

Example for obstacle and depositing: sand grains from Sahara are transported through Egypt and the Mediterranean Sea, they cross the low flat region of Macedonia in Greece and than hit the Belasica and Kozhuf mountains at the border with the Republic of Macedonia, they slow down significantly and deposit the sand grains near the town of Gevgelija.

Answer:

The correct answer is C. slows down or hits an obstacle. :D

Explanation:

Answers

Answer:

Mt. St. Helens.

Explanation:

This stratovolcano erupted in 1980 in the United States. Although there were warnings of its impending eruption, it still killed dozens, partly because it first blew sideways, producing a monstrous landslide. This volcano is Mt. St. Helens. Mount St. Helens is an active Volcano located in Washington. It is believed to have been formed 275 thousand years ago, it is an explosive dacite volcano. During the 1980 eruption of the volcano, it first blew off from the side and later the summit was removed leaving a horse-shoe shaped crater.

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