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Mkey [24]
2 years ago
14

Can someone tell me the defination of science

Biology
1 answer:
Afina-wow [57]2 years ago
8 0
<span>the intellectual and practical activity encompassing the systematic study of the structure and behavior of the physical and natural world through observation and experiment.

</span>
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Write down at each of the steps of the digestive path the type of change occurring (physical or chemical).
anygoal [31]

Answer:

Ingestion = Chemical

Propulsion = don't know...

Mechanical breakdown = Chemical

Elimination = chemical

Absoption = both

Chemical degestion = chemical

3 0
2 years ago
Blood tests for the virus are 99.9% accurate when given to some- one infected and 99.99% accurate when given to someone not infe
inna [77]

Answer:

0.00019989%

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3 years ago
Describe how oxygen gas (O2) is produced during photosynthesis. Include the specific structures in the plant where the reaction
Softa [21]
In light reactions, a molecule of chlorophyll absorbs one photon of light, causing a chlorophyll electron to transfer to a higher energy level. ... Chlorophyll then replaces the lost electrons from water molecules. The oxygen atoms form oxygen gas while the hydrogen atoms form protons and electrons.
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2 years ago
For fertilization to occur in humans, only one sperm is needed to weaken the barrier that surrounds the egg.
photoshop1234 [79]

Answer:

False

Explanation:

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The first sperm to reach an egg isn’t the one to fertilize it because the egg is surrounded by a gelatinous membrane called the zona pellucida. Outside this layer, a layer of small granulosa cells also present.

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8 0
3 years ago
A person who has been arrested for robbery should be referred to as:
Tpy6a [65]
A person who has been arrested for robbery should be referred to as the suspect.
3 0
3 years ago
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