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mariarad [96]
3 years ago
7

NEED HELP!!!!! Brainliest to whoever helps the most

Biology
1 answer:
xeze [42]3 years ago
4 0

Answer: 1. Cambrian period, 5. rotation at the shoulder joint. 3. d. notochord, 4. d 2. d.

Explanation:

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Greenhouse gases arise naturally, and are part of the make-up of our atmosphere. Earths conditions are just right to allow life, including us, to flourish. Part of what makes Earth so amenable is the naturally-arising greenhouse effect, which keeps the planet at a friendly 15 °C (59 °F) on average. But in the last century or so, humans have been interfering with the energy balance of the planet, mainly through the burning of fossil fuels that give off additional carbon dioxide into the air. The level of carbon dioxide in Earth’s atmosphere has been rising consistently for decades and traps extra heat near the surface of the Earth, causing temperatures to rise.

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24. An investigator examines voltages resulting from changes in membrane permeabilities. If the cell membrane suddenly had 100 p
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Answer:

Generally, K+ ions ensures re-polarization of  the membrane potential. It always ensures that the neuron returns its resting  state, protecting the  neurons and ensuring episode of rest before the next action potential.

K+ does this by leaving the axon, making the inner layer more negative. This is resting membrane potential. Because there are many K+ channels for leakages out of the neuronal axons.

Therefore, in this scenario, he neuron will return to its resting membrane potential state which between values -50 to -75mV.

Therefore the value of the potential will be -60mV, or within the range of -50 to -60mV. This is because the neuron is is non- excitable.

Explanation:

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3 years ago
Describe laboratory tests, clinical procedures, and abbreviations related to endocrinology.
zalisa [80]

Laboratory tests and clinical procedures include:

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  • Other examinations can evaluate parathyroid problems.
  • Female hormonal problems can be identified with the aid of luteinizing hormone (LH) and follicle stimulating hormone (FSH) blood tests.
  • Male hormonal problems can be discovered with tests for total testosterone.
  • Other blood tests measure hormone levels that have an impact on numerous systems, including cortisol, 17-hydroxyprogesterone, DHEA-sulfate, ACTH, aldosterone, vitamin D, PTH, prolactin, and other estrogen analogues.
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<h3>What is Endocrinology?</h3>

•Endocrinology is the study of endocrine glands.

•Endocrine glands are a group of glands in the body which secrete hormones.

•The purpose of the secreted hormones is to evoke a specific response in other cells of the body which are located far away.

Learn more about endocrine glands here:

brainly.com/question/11222803

#SPJ4

8 0
2 years ago
Most of the food and oxygen in the environment is produced by the action of
Stolb23 [73]

The correct answer is (4) Autotrophic organism.

Green plants make their own food by the process of photosynthesis using sunlight. Most of the autotrophs use carbon dioxide, sunlight and carbon dioxide to produce glucose that is used by the plants to obtain energy. Most of the oxygen comes from these organisms and decrease in the number of green plants can lead to several problems due to decrease in the amount of oxygen. Example: green plants, algae, and even some bacteria. This food and oxygen is produced by the action of autotrophic organisms

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3 years ago
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Which natural events likely caused Earth's past mass extinctions?
adelina 88 [10]
In my opinion

Mass extinctions happen because of climate change, asteroid impacts, massive volcanic eruptions or a combination of these causes. One famous mass extinction event is the one that lead to the extinction of dinosaurs, 65 million years ago.
I hope it’s help
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3 years ago
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