How many variables should you have in a control experiment?

Answers

Answer 1

Answer: It depends on the case, but usually two variables should be in a controlled experiment.

Answer 2

Answer: you should do three variables so you can note the difference

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Explain how the blood from an injured fish can reach the nose of a shark

Answers

The blood from an injured fish can reach the nose of a shark through the water. The shark’s olfactory organs detect the scent of the blood molecules dissolved in the water, which triggers the shark’s hunting behaviour

Jane, a 79-year-old woman, has been diagnosed with a tumor in the brain. She has lost some sensory and motor functions associated with the face, like control of facial muscles for emotion and various sensory functions like taste. In addition, she has some hearing loss and balance problems. The location of the tumor is likely to be theA) cerebellum.
B) cerebrum.
C) medulla.
D) thalamus.
E) pons.

Answers

Answer:

The answer is B. Cerebrum.

Explanation:

The cerebral cortex or cerebrum comprises of four part namely, Parietal lobe, frontal lobe, temporal lobe and occipital lobe.

The parietal lobe is responsible for all the five senses, that is, sight, hear, touch, taste and smell.

Most energy enters ecosystems in the form of sunlight.true or false

Answers

True!
Most energy enters ecosystems in the form of sunlight. Plants convert solar energy to chemical energy in the form of sugar. This energy will leave the ecosystem as heat energy.

Answer:

The answer is sunlight

Explanation:

Do you believe that simply redefining the Calendar of the seasons is a viable solution? Why or why not?