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Ratling [72]
3 years ago
13

Subjects in experimental and control groups should have matching skills. true or false

Biology
2 answers:
makvit [3.9K]3 years ago
7 0
True. Both must be the same.
alexgriva [62]3 years ago
3 0

Answer:

False, the subjects in experimental and control groups are same. But the control do not undergo any experimental test.  

Explanation:

In a scientific experiment, we take 2 objects for experiment one is an experiment and one is control.  In experiment animal, we apply many tests on it to know the result of the experiment. But in control animals, there is no experiment on it. one keeps it in its normal condition to compare with the experimental animals.

E.g. The thyroxine hormone increases the metamorphosis of a toad.

It is known by comparing the 2 types of tadpole i.e. one having thyroxine injected on it, and other is normal.  

The control is an independent variable which is compared to the experiment variable/animal to know about the effect of the test.

Therefore, the experimental skill is applied to the experimental object not to the control one.

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The image shows a rain forest ecosystem. The energy from plants, or producers, acts as the starting point of energy in the ecosy
ozzi

Answer:

3.Some energy is transferred to the smaller organisms, and the rest is stored in the bodies of larger animals.

6 0
3 years ago
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HURRY <br>2. Identify two advantages of sexual propagation and two disadvantages.
makkiz [27]

Answer:

advantages and disadvantages of sexual and asexual reproduction produce Dun natak variation in the offspring the species can adapt to new environment due to variation which gives them a survival advantage a disease is less likely to affect all adventure in a population

8 0
3 years ago
A piece of granite rock have a density of 2.57g/cm^3 and a mass of 0.304 kg. What is the volume ?
givi [52]

Answer:

1.183×10∧-4 m³

Explanation:

ρ=m/V

Here, m=0.304kg

ρ=2.57g/cm^3 =2570kg/m^3 [1g/cm^3=1000kg/m^3]

V=1.183×10∧-4 m³

Hope, this helps you.

7 0
3 years ago
The researchers bought samples of whale meat�all labeled simply as kujira, the generic Japanese term for whale meat�from markets
SashulF [63]

Answer:

1. Observation

2. Question

3. Hypothesis

4. observation

5. prediction or test

Explanation:

1. A question is being asked when something is being enquired about and generally consists of words like who, what, where, why, when etc with a question mark. Hence the below given statement is a question  

Where is the whale meat being solid in Japanese markets coming from?

2. Observation is an interpretation made after viewing something for a certain period of time with concentration. Hence below given statement is an observation –  

The availability of whale meat in Japanese markets exceds that expected from the reported legal captures of whales

Whales are being harvested illegally and their meat sold in markets in Japan

3. Hypothesis is an “if” and “then” scenario, in which a fact is rejected when there are not enough causes to support it.  

If whale-s are being illegally harvested, reported whale captures will be far lower than the number of captures predicted by genetic analyses of whale meat in markets

4. prediction, or test1

When something is being experimented on or with to reach a conclusion. Hence the below given option is a prediction or test

Scientists subject whale meat to genetic analysis to determine its likely capture location and to extimate whale captures at that locationDrag each statement under the step in the scientific method that it demonstrates.

5 0
4 years ago
The cranial cavity and the vertebral canal contain the __________.
Novosadov [1.4K]

The cranial cavity and the vertebral canal contain the spinal cord

Vertebrae is the synonym of spine. Inside the spine, there will be spinal cord protected by the nearby bone. Spinal cord will divided into many smaller cords after leaving the spine and spread through the body to carry signal from/to the brain. Without the spinal cord, the brain will not be able to reach and control the body.

8 0
3 years ago
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