All categories

2 years ago

What proof do we have that Pangaea existed? Explain 3 pieces of evidence!

1 answer:

8 0

The coast of south america fits perfectly with the coast of africa.

There are fossils of species of land animals found on completely different continents.

and the theory of plate tectonics

You might be interested in

2.The currents causes the eastern coast of the United States and Northern Europe to have milder winter climates? a) Pacific Nort

mylen [45]

Answer:

Option d) Gulf stream

Explanation:

The Gulf stream along with the drift in North Atlantic which is the northern extension of the Gulf stream is a warm current of Atlantic ocean.

It has its origin in the Gulf of Mexico and extends upto the tip of Florida along the coastlines of the eastern part of the NewfoundLand and the U.S before passing through the Atlantic Ocean.

These are responsible for the milder winter climates of Northern Europe and the U.S

5 0

3 years ago

2. A 260 em cylinder container was used to collect an undisturbed soil sample. The container and soil weighed 403 g when dried.

sineoko [7]

Answer:

The Bulk density = 1.3 g/cm³

the porosity of the sample is 132 cm³

Explanation:

Given:

Volume of cylinder = 260 cm³

Mass of container and the soil = 403 g

Mass of the empty container = 65 g

Thus,

The mass of the soil is = 403 - 65 = 338 g

Now,

The Bulk density = $\frac{\textup{Mass}}{\textup{Volume}}$

The Bulk density = $\frac{\textup{338 g}}{\textup{260}}$

The Bulk density = 1.3 g/cm³

also,

average particle density for mineral soil is usually given as 2.65 g/cm³

i.e the air present in the given soil sample has reduced its density from 2.65 g/cm³ to 1.3 g/cm³

The mass of the whole sample = Volume × Density

= 260 × 2.65

= 689 gm

but,

The actual mass of the dry sample = 338 g

thus,

Mass of air in the sample = 689 - 338 = 351 g

Therefore,

the volume of 351 g soil = $\frac{\textup{mass defect of soil}}{\textup{density of soil}}$

= $\frac{\textup{351}}{\textup{2.65}}$

= 132.45 cm³

so the porosity of the sample is 132 cm³

4 0

4 years ago

Overcrowding and slums developed _________________.

Iteru [2.4K]

Overcrowding and slums developed in many impoverished countries in the 20th century, mostly due to large migrations to cities from people looking for work.

3 0

3 years ago

Name the layers of the atmosphere from the upper most layer to the<br> bottom layer.

Solnce55 [7]

Earth's atmosphere has a series of layers, each with its own specific traits. Moving upward from ground level, these layers are named the troposphere, stratosphere, mesosphere, thermosphere and exosphere. Hope this helped.

4 0

3 years ago

Compare the natural conditions for the development of agriculture in Denmark and Hungary.

beks73 [17]

I’m not sure. What story is that?

7 0

3 years ago