BIOLOGY MIDDLE SCHOOL

A controlled experiment is designed to test a___.A. Control
B. Hypothesis
C. Theory
D. Prototype

Answers

Answer 1
Answer: B. Hypothesis.... That is because when doing an experiment one trying to find out whether the hypothesis is true or false.
Answer 2
Answer: a controlled experiment is designed to test a hypothesis

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What is the correct term for a release of an ovum in the female reproductive system?

Answers

The release of an egg/ovule (an egg cell is called an ovum) is called ovulation. 
The correct term for release of ovum in females is ovulation.

What does the moth do to avoid predators​

Answers

Answer:

Moths make use of several self defending techniques to avoid predators.

Explanation:

Most people often confuse moth with butterflies, but moth are a different member of Lepidoptera, an flying insect. There are many ways through which moth protect themselves from predators.

Since moths are usually active during the night time, so they often hides in the day time from predators. Another technique that moths use is camouflage, where they can confuse the predators by blending into the surrounding. And when a predator us unable to see a moth, its life is saved. Apart from this, moths are even clever enough to trick bats by their strong detection power.

Is the modern periodic table organized by increasing atomic number or atomic mass?(Use CER for this question)

Pls help me

Answers

Answer:

In the modern periodic table, the elements are listed in order of increasing atomic number. The atomic number is the number of protons in the nucleus of an atom.
its listed in order of increasing atomic number
atomic number - number of protons in the nucleus of an atom

Which of the following is the correct definition of mineralsA. a naturally occurring, inorganic solid that has a crystal shape and a definite chemical composition

B. a naturally occurring, inorganic solid that forms through crystallization of melted materials

C. a naturally occurring organic solid that forms through crystallization of materials dissolved in water

D. a naturally occurring organic solid that has a crystal shape and a definite chemical

I think it's C

Answers

Answer:

Option (A)

Explanation:

A mineral is a naturally forming, solid substances that are inorganic in nature. It is comprised of a specific chemical composition, with a proper crystal shape. Various types of minerals are formed by various types of the process such as due to the evaporation, cooling or crystallization of magma. These minerals are combined together and give rise to the formation of rocks. These minerals play an important role in the identification of rocks.

These minerals forming the rocks are found in different geological settings.

Thus, the correct answer is option (A).
Your answer should be B

. Why are the effects of acidic deposition often felt in ar-eas far from where the primary pollutants are produced?

Answers

Answer:

Acid desposition is very harmful for the environment because it can easily combine with primary pollutants like carbon monoxide, particulate matter, sulfur oxide etc and form harmful substances.

Explanation:

  • Acid desposition means acid forming pollutants in the atmosphere that can easily combines with the primary pollutants which is emitted from car and energy power plants.
  • One of the major culprit is sulful dioxide which is released from car. Once they react with water, produce sulfuric acid and nitric acid. Their pH is extremely low thus they acts as acid.
  • These acidic desposition create hazards in aquatic body,wetlands,aquatic fishes,shell fishes,may cause nitrogen pollution and also cause damage in ecosystem.
  • This is the main reason that acidic desposition often felt in area far from pollutants so that it does't hamper the ecosystem.

Most of the dissolved substance in sea water is:

Answers

I would say salt. I mean 75 % of water is salt water, which is why we use machines too sort out Salt From Fresh!

Answer:

chlorine.

Explanation:

my test said it was right
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