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Flauer [41]
3 years ago
14

Choose the importance of biodiversity. *

Biology
2 answers:
makkiz [27]3 years ago
5 0

Answer:

everything is important in your options which suits to biodiversity

zalisa [80]3 years ago
5 0

a beacause this is just logic

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Match each part of the lymphatic system with the correct label.
Anettt [7]

Answer:

1 Cervical Lymph Nodes

2 Right Lymphatic Duct

3 Axillary Lymph Nodes

4 Thoracic Duct

5 Cisterna Chyli

6 Peyer's Patches

7 Inguinal Lymph Nodes

Explanation: are correct

7 0
2 years ago
A population of squirrels eats acorns from local oak trees. In some years, oak trees produce much greater
Tpy6a [65]

Answer:

B

Explanation:

The population size increases

8 0
2 years ago
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A 25 foot long ladder is propped against a wall at in angle of 18 with the wall how high up the wall does the ladder reach
Step2247 [10]

Answer:

for e2020 its the second option

Explanation:

7 0
3 years ago
The description of a cell energy process is listed below.
Bumek [7]

Answer:

The electron transport chain

Explanation:

During the citric cycle in the matrix of the mitochondria, the NAD+ and FAD+ the metabolic cycle are reduced to NADH and FADH₂ through accepting electrons. The energy harnessed from the metabolic cycle is used to develop a proton motive force across the mitochondrion intermembrane. This potential energy is harnesses by ATP synthase to create ATPs. As the H+ ions drain back into the matrix of the mitochondria, they are used to reduce oxygen to water. In this redox reaction, the FADH₂ and NADH donate their electrons  and are recycled back to the citric cycle in their oxidized form.

3 0
3 years ago
Why is the sympathetic nervous system referred to as the fight or flight system?
Nat2105 [25]

As you can see from the diagram below, the human nervous system is divided into two main components, the peripheral nervous system and the central nervous system.

The peripheral nervous system is further divided into two components. The somatic nervous system involves the voluntary movement of skeletal muscle. When you decide to raise your cup of coffee to your mouth, that is the somatic nervous system at work activating the appropriate muscles. The second component of the PNS is the autonomic nervous system, which controls processes that are out of our conscious control.

The autonomic nervous system is further subdivided into the parasympathetic nervous system and the sympathetic nervous system (which you are interested in). In very generalized terms, they have antagonistic effects on each other. The sympathetic nervous system generally activates the body, whereas the parasympathetic nervous system primarily acts to relax the body. This is a simplified view of things, but it is useful to think of it in this way.

The sympathetic division of the autonomic nervous system increases heart rate, inhibits digestion, relaxes bronchi in the the lungs to allow more airflow, causes the release of glucose from the liver, and relaxes the bladder. All of this activates the body, prepares it for a "fight".

In contrast, the parasympathetic division reduces heart rate, constricts bronchi in the lungs, and increases blood flow to the digestive tract. It has been called the "rest and digest" system.

As you can see from the diagram, the nerves of the parasympathetic nervous system come directly from the brainstem and spinal cord. However, with the sympathetic nervous system, there are "ganglia" (groups of cell bodies) outside the spinal cord itself.

Interestingly, the parasympathetic nervous system only uses Acetylcholine (ACh) to exert its effects on organs, but the sympathetic nervous system uses both ACh and norepinephrine (NE) to activate the body.

Its important to remember that the sympathetic and parasympathetic nervous systems are autonomic, meaning we generally have little control over them.

6 0
2 years ago
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