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mojhsa [17]
3 years ago
15

How many trophic levels are there in the following food web?

Biology
1 answer:
zhenek [66]3 years ago
6 0

Answer: c.4

Explanation:

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Westkost [7]

Answer:  Effects are increased when combined with fatigue, illness, stress, other drugs or poor driving conditions..08-.11: Increased risk of crash – Illegal in every state; risk of crash is six to 10 times greater than at .00 BAC, and level of impairment. no it is not safe. Someone can have a car accident or die. or a major head trauma.

Explanation: hope this helps you

8 0
2 years ago
T
Mnenie [13.5K]

Answer:

1. Birds in the chaparral biome have adapted to living (C)on the ground.

2. The aromatic oils of chaparral shrubs: All of the above

Explanation:

1. birds are adapted to live on the ground and prey during night time.

5 0
3 years ago
Acetylcholine receptors on skeletal muscles are described as being ionotropic receptors because
DerKrebs [107]

Answer:

they are Na+, K+ and Ca2+ ion channels.

Explanation:

Ionotropic acetylcholine receptors are also called nicotinic acetylcholine receptors because beside acetylcholine (Ch) they respond to nicotine. These receptors are  primary receptors in muscle for motor nerve-muscle communication that controls muscle contraction.

Two molecules of ACh are required for receptor to open. Since the receptors are  linked to ion channels, the channels open. Opening of the channel allows positively charged ions to move across it: sodium enters the cell and potassium exits.

3 0
3 years ago
The fossil record shows that the average size of black bears was large during cold glacial periods and got smaller during warmer
snow_tiger [21]

Answer: directional

Explanation:

Because only one trait was favored. When bears are cold, being bigger helps them better adapt to the coldness. Adjusting to the weather is one trait.

3 0
3 years ago
Why would it be hard to find the ideal C02 level if the light intensity were very low ?
uysha [10]

Answer:

It would be difficult to find the ideal CO2 level with a low light intensity because the plant will have a difficult time trying to survive. It would be very hard considering with no light there's no reaction.

Explanation:

trust

5 0
2 years ago
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