according to the fossil record, when did the earliest animals appear on earth?

Answer:

541 million years ago

Explanation:

Which geographical feature is found in the middle east?

Which of these protects the Earth from harmful radiation when found in the stratosphere, but is a pollutant at lower altitudes?

A.
carbon

B.
oxygen

C.
ozone

D.
hydrogen

In 2011, piracy was an enormous problem off the coast of __________.
A.
Nigeria
B.
Kenya
C.
Somalia
D.
Sudan

which factor is a primary cause of seasonal changes on earth?

What are three characteridtics of galvanised steel that make it the most preferred material for the rain guage n evaporation pan​

What is a settlement pattern​

Which statement is NOT true of money and politics in North America?

Select one:

O a. The United States accrues national debt by issuing treasury securities to cover the expenses it has that exceed its

income from taxes and other revenues.

O b. Republicans believe that the debt is dangerous and needs to be reduced by cutting government spending.

O c. Democrats believe that some government spending, especially health care and education, should be reduced.

O d. A major reason for low voter turnout in the United States is the frustration created by the role of money in politics.

Volcanoes are known for their destruction. How are they constructive?

killing all the animals and vegetation

forming new land and islands

melting rock into gold

forming new species of animals

HURRY PLEASE!!

in the late nineteenth century, a large proportion of swedish immigrants that came to the united states settled in rural areas of Minnesota. descendants of these communities remain in minnesota today as shown on the map. which of the following best describes the pattern of swedish-american ethnicity within minnesotas cultural landscape?
a. a diffused pattern of swedish ethnicity evenly distributed across the state
b. a clustered pattern of swedish ethnicity
c. a swedish ethnic majority in the northern half of the state
d. a swedish ethnic majority throughout the state
e. a single remnant area with a high percentage of swedish ethnicity

what percent of u.s. energy comes from nonrenewable energy sources?

the eroded materials carried by water or wind are called

The geographer's concern with Earth's interior is restricted primarily to its influence on ________.

if the sun’s surface temperature falls to half the current surface temperature, by what factor will the radiant energy reaching the earth change?

what are the things that we need to consider in raising animals

Which statement describes the movement of air?
Ofrom low pressure to high pressure
O from south to north
O from north to south
O from high pressure to low pressure

b. What is the scale factor of the dilation that takes Q to P?

A farmer provides generous amounts of water to his crop to remove salts that plants do not absorb. This farming technique is an example of

flood irrigation
furrow irrigation
organic farming
spray farming

what type of autumn weather will a low pressure system bring

A chain of events is

a timeline of scientific discovery.
a sequence of causes and effects.
a conclusion based on information.
a circumstance in which a word is use

2.1.7. Metamorphic rock is (very / not very) resistant to erosion. 2.1.8. Diamonds are found in (Igneous / Metamorphic) rock. 2.1.9. Igneous rock (is / is not) normally in layers. 2.1.10. (Metamorphic / Igneous) rock is often called a basic rock since it comes directly from magma.​

A deep layer of warm water is necessary for hurricane development because of __________ that occurs in the vicinity of the eye and eyewall of a hurricane. Select one: a. rain b. swell c. melting d. upwelling e. overrunning

Identify the layer of Earth’s atmosphere where the circulation and mixing of liquids and gases produce weather.

what river runs through london in the united kingdom?

2.2 State whether the following statements are TRUE or FALSE. Write only TRUE or FALSE next to the question number, for example 2.1.6 TRUE 2.1.1. The earth's crust is made up of the lithosphere and the continental crust. 2.1.2. The mantle consists of a thick layer of molten rock called lava. 2.1.3. The epicentre is the point in the earth's crust where an earthquake starts. 2.1.4. A crater forms when the cone of a volcano collapses. 2.1.5. Pangaea split into the continents as we know them today.​

why does jupiter have three distinct layers of clouds?

what is produced by splitting the atom of a radioactive material?

A. gigantic waves
B. fossil fuels
C. nuclear energy
D. meltdown

help me in geographyyyyyyyyyyyyy​

How many countries are a part of NATO?
How do countries become members of NATO?
What are the benefits of joining NATO?
How is NATO funded?
How do member countries contribute to NATO’s goals?

If you were standing in Iran, in what direction would you travel in order to get to Syria?

how much of the earth’s surface does the ocean cover?