All categories

3 years ago

Fossils of tropical plants have been found in the Earth’s polar regions. How could this be explained?

Geography

2 answers:

lisov135 [29]3 years ago

7 0

The meteor that struck the Earth, and created the Grand Canyon. Was powerful enough to tilt the Earth’s axis.

Fed [463]3 years ago

7 0

The study published in the journal Nature shows that tropical vegetation, including palms and relatives of today’s tropical Baobab trees, was growing on the coast of Antarctica 52 million years ago.

You might be interested in

What is the scale that measures the strength of an earthquake based on seismic waves and movement along a fault is called what?

NeX [460]

The richter scale measures the strength.

7 0

4 years ago

What is the Wt% of SiO2 in augite?<br><br> (Ca, Fe, Mg, Na)(Mg,Fe,Al) (Si,Al)2 O6

vaieri [72.5K]

Answer:

The weight% of $SiO_2$ in augite is 13.16 %.

Explanation:

Atomic mass of calcium = 40 g/mol

Atomic mass of iron = 56 g/mol

Atomic mass of magnesium = 24 g/mol

Atomic mass of sodium = 23 g/mol

Atomic mass of aluminum = 27 g/mol

Atomic mass of silicon = 28 g/mol

Atomic mass of oxygen = 16 g/mol

Mass of $SiO_2=28 g/mol+ 2\time 16 g/mol=60 g/mol$

Molar mass of the augite $(Ca, Fe, Mg, Na)(Mg,Fe,Al)(Si,Al)_2 O_6$ = M

$M=40 g/mol+2\times 56 g/mol+2\times 24 g/mol+23 g/mol+3\times 27 g/mol+2\times 28 g/mol+6\times 16 g/mol=456 g/mol$

Weight% of $SiO_2$ in augite:

$w\%=\frac{60 g/mol}{456 g/mol}\times 100=13.16\%$

3 0

4 years ago

Grains grown for good in the region are know as cereals.<br> a. true<br> b. false

melamori03 [73]

Answer:

True

Explanation:

crops and other important food sources are processes and put into cereals.

7 0

3 years ago

Read 2 more answers

What direction would you be traveling if you flew over Mt.Everest and then over the Nile river

tatuchka [14]

You would be flying south-west.

5 0

3 years ago

Read 2 more answers

Which form of government has a king or queen shares power with people of the state and the other branches of government

dmitriy555 [2]

Answer:

A monarchy

Explanation:

It can either be absolute monarchies or constitutional monarchies, whatever one fits more with your questions or just simply, monarchy. Hope this helps!

8 0

3 years ago

Read 2 more answers