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Ludmilka [50]
3 years ago
8

Helppppp!!! 13 points!!!!

Biology
1 answer:
love history [14]3 years ago
7 0

The first forms of life on Earth appeared about 3 billion years ago

this doesn't really require an explanation so i'll explain why the other options are incorrect

the first one is incorrect because the first living organisms where prokaryotic, not plants

the second statement is incorrect, the early Earth had an atmosphere with low O2 concentration that didn't allow complex forms of life to exist

the fourth statement is incorrect because most of the species that ever existed went extinct

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With which part or parts of the heart do you think sympathetic and parasympathetic neurons form synapses? explain your reasoning
Softa [21]

The autonomic nervous system is the one that pertains to sympathetic vs parasympathetic. The autonomic nervous system has three divisions: the enteric nervous system, the sympathetic nervous system, and the parasympathetic nervous system.

Sympathetic is the nervous system responsible for your “fight or flight” responses in times of emergencies. It controls the body’s responses to stress, injuries, or perceived threats.

Parasympathetic is the nervous system responsible for your “rest and digest” responses in times of non-emergencies. It controls the body’s responses at rest and helps your body regulate its normal daily organ functions.

One way to remember how to distinguish between the two is to associate the beginning letters of the words with their corresponding attributes.

The sympathetic nervous system kicks in during times of stress, and the parasympathetic nervous system kicks in during times of peace.

Of course, there is much more to both nervous systems than that so let’s look a little bit closer at both.

Learn more about nervous system here

brainly.com/question/13487019

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2 years ago
Select the correct answer. Which component of the blood is part of the body's immune system? A. plasma B. platelets C. red blood
anastassius [24]
White blood cells, homie
4 0
4 years ago
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How do organisms get their DNA?
Reil [10]
<h2>Answer </h2>

DNA are found in the cells of all living organisms

<u>Explanation</u>

DNA is a complex molecule consisting of many components which are passed from parent organisms to their offsprings during the process of reproduction. The DNA contains instruction needed for an organism to develop survive and reproduce. DNA is deoxyribonucleic acid and is contained in your body's cells. From microscopic view they are double, large cable of particles termed as nucleotides. This show the cell what proteins to produce in the living organism. Hence, all living things have DNA within their cells.

6 0
4 years ago
Biology 3.01
telo118 [61]

Answer:

chromosomes will be seen in the nucleus of the dividing cell because they are visible when a cell is dividing apposed to non-dividing cells.

Explanation:

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Information coming from each eye goes to the opposite-side thalamus, where _____ receive and help process signals from sensory n
Aleksandr-060686 [28]

Information coming from each eye goes to the opposite-side thalamus, where "inter neurons" receive and help process signals from sensory neurons and shuttle the data to the visual cortex.

Explanation:

Interneurons are the fundamental nodes of neural circuits, allowing message transfer among sensory or motor neurons and the central nervous system (CNS). They show dynamic characters in reflexes, neuronal oscillations, and neurogenesis in the grown-up mammalian brain. Interneurons (also recognized as association neurons) are neurons that are found exclusively in the central nervous system. That means that they are found in the brain and spinal cord and not in the peripheral segments of the nervous system.

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3 years ago
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