BIOLOGY MIDDLE SCHOOL

1)How many years of history separate 1200 B.C. and A.D. 450?a) 850
b) 750
c) 1650
d) 800

Answers

Answer 1
Answer: C 1650 Because you have to factor in the difference of BC and AD. you must get 1200 BC to 0 first, and then go to 450, therefore getting 1650 

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The strongest evidence for evolution from a common ancestor is

Darwin was offered a position on the _________________ whose mission was to survey the waters around South America.

Answers

Darwin was offfered a position as a naturalist on the HMS Beagle, one of the Britsh Royal Navy's survey ship.

Foods that allow microorganisms to grow are called parasitesTrue Or False

Answers

The answer is "False".
 
Foods that allow microorganisms to grow are called substrate.Parasites can be defined as the organisms which depend on otherorganism (host) to get nutrients and protection without returning any benefits for the host.Parasites can be external or internal.

The color, taste, and juiciness of a particular variety of strawberry makes it very popular. Growers are able to plant hundreds of acres of this variety, and all the plants are exactly the same, since they reproduce asexually. Explain why this lack of diversity in the strawberry field could prove to be a problem for the growers.

Answers

Answer:

If one Plant develops a mutation that has undesirable effects, such as reduced resistance against disease, then the other plants will have that mutation too.

Explanation:

Answer:

.....

Explanation:

What is the ozone layer?
Why is it important to humans?

Answers

Answer:

The ozone layer absorbs most of the Sun's ultraviolet radiation in the Earth's stratosphere.

Explanation:

It is important to humans because it protects us from getting sun burnt and from our body receiving too much radiation.

Answer:

it protects us from radiation from the sun

What effect might global warming have on earths inhabitants?
Please help!tysm ;)

Answers

Here are few of the things that scientists think may happen as the temperature rises. Some of them are already happening: Glaciers melting - Many glaciers are already melting and shrinking throughout the world. If the temperature increases they will continue to melt. This will cause animals that rely on glaciers such as polar bears and other species to become extinct. Ocean levels will rise - As the glaciers melt, the ocean levels will rise. This could cause flooding in cities located near the coast. Migration of animals - Animals will migrate to cooler spots as their old habitats get too warm. This could upset the food chain and put some species in danger of extinction. Extreme weather - Some scientists think that warming will fuel more powerful hurricanes as well as more droughts and flooding in different areas of the world. Change in ecosystems - cold weather biomes such as the tundra will shrink, while desserts will continue to expand. Hope this helped :)

What is the main difference between weather and climate?A. The severity of the conditions
B. The length of time over which the conditions are measured
C. The location of the conditions being measured
D. The predictability of the conditions

Answers

Answer: Option B) The length of time over which the conditions are measured

Explanation:

Weather is the atmospheric condition of a given area over a short period of time, usually days to several months

Climate, on the other hand, is the atmospheric condition of a given area over a long period of time, usually over 2 years.

Thus, weather and climate differ based on the length of time over which the conditions are measured.

Answer:

The main difference between weather and climate is :

B. The length of time over which the conditions are measured

Explanation:
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