96 questions and answers in this section

Natural Sciences » Biology

Explain why photosynthesis is crucial for the survival of living beings.

Explain why photosynthesis is crucial for the survival of living beings.

Photosynthesis is a vital process for many living organisms, especially plants, algae, and some bacteria. It takes place mainly in the chloroplasts of plant cells, where sunlight...

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Explain why sunlight is essential for the synthesis of Vitamin D in the body.

Explain why sunlight is essential for the synthesis of Vitamin D in the body.

The UVB rays of the sun penetrate human skin up to the epidermis, the outermost layer of the skin. These rays have a specific wavelength, ranging from...

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Explain why cats mainly meow at night?

Explain why cats mainly meow at night?

Cats are nocturnal animals by nature, which means they are more active at night than during the day. Their eyes are adapted for night vision, thanks to...

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Explain why some people have seasonal allergies and others do not?

Explain why some people have seasonal allergies and others do not?

Pollen is a fine powder produced by flowering plants to reproduce. Plants release pollen into the air so that it can be transported to other...

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Explain why bees dance to communicate with their fellow bees.

Explain why bees dance to communicate with their fellow bees.

Bees dance to communicate because it is an effective way to transmit essential information to their fellow bees. This form of complex communication is primarily...

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Explain why dogs have such a highly developed sense of smell?

Explain why dogs have such a highly developed sense of smell?

Dogs have an exceptionally developed sense of smell due to the impressive amount of olfactory cells present in their nose. Compared to humans, dogs have...

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Explain why do caterpillars transform into butterflies during their metamorphosis?

Explain why do caterpillars transform into butterflies during their metamorphosis?

During the metamorphosis of a caterpillar into a butterfly, four major stages can be distinguished. First, the caterpillar prepares for transformation by building a cocoon...

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Explain why meat becomes more tender when it is marinated?

Explain why meat becomes more tender when it is marinated?

The biochemical processes of marinating meat mainly involve three key mechanisms. Firstly, the acidic marinade, often composed of lemon juice, vinegar, or yogurt, acts by...

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Explain why children are often more flexible and adaptive than adults?

Explain why children are often more flexible and adaptive than adults?

Children go through critical periods of brain development during their growth. During these periods, the brain is particularly receptive to stimuli and environmental experiences. These...

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Explain why shrimp change color when cooked.

Explain why shrimp change color when cooked.

Shrimps contain several types of pigments responsible for their color. The main pigments present in shrimps are astaxanthins, carotenoids, and proteins. Astaxanthins are natural pigments...

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