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Komok [63]
3 years ago
8

An atom with how many electrons in its outer shell is most stable

Biology
1 answer:
Shkiper50 [21]3 years ago
6 0
This would be C, or 8. Hope I helped! :)
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Time on earth is divided into 6 eras. Three are considered "Precambrian" Which eras are NOT Precambrian?
bulgar [2K]

Explanation:

<u>the  Paleozoic Era </u>

The Precambrian era describes a period of time that pre-dates Cambrian. This time typically references the entire period of the history of earth before the formation of rocks containing identifiable fossils occurred. It covers the majority of Earth’s history and is divided into the Hadean, Archean and the Proterozoic era.

Just before the Cambrian eruption, in the  Paleozoic Era the environment was oxygenated, culminating in an explosion of new life in the Proteozoic Eon (2500-541 million years ago) in the form of primitive blue-green algae named cyanobacteria and oxygen based species. Multicellular species followed later, along with structure at higher levels, and complex life. Oxygen levels grew gradually over this period of time, from low levels.

Learn more about cellular life at brainly.com/question/11259903

#LearnWithBrainly

8 0
3 years ago
Which of the following are possible treatments for multiple sclerosis? There may be more than one correct answer. Which of the f
fenix001 [56]

Answer:

--Block immune cells from crossing the blood brain barrier.

--Stimulate the regeneration of myelin.

Explanation:

Multiple sclerosis or shortly known as MS is an unpredictable disease caused in the humans. Multiple sclerosis affects the central nervous system of our brain which causes the disruption in the flow of the information within our brain, and between our brain and the body.

It is a very rare disease.

The symptoms of MS may vary and includes double vision, weakness, fatigue, impaired coordination, pain, etc. Though there is no permanent cure for MS but scientist and doctors around the world suggest that by blocking the immune cells and stopping them from crossing our blood brain barrier can prevent this disease.

Multiple sclerosis can also be prevented by stimulating the myelin to regenerate.

8 0
3 years ago
What age AIDS safety how can stop​
Musya8 [376]

Answer:

By age group, in 2019, the number of new HIV diagnoses was highest among people aged 25 to 29. From 2015 through 2019, HIV diagnoses increased among persons aged 13-24 years, 35-44 years, and 45-54 years.

5 0
2 years ago
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What cause the movement of wind and water to the right or left on earth?
Jobisdone [24]

The change in gravitational forces causes currents to move towards right. The deflection of winds to the left causes the currents to move in the opposite direction.

5 0
3 years ago
A species of birds entered a nonnative habitat and is now considered an invasive species. What’s the most likely effect this spe
Lady bird [3.3K]

Answer:

The native species will more than likely be eradicated or they might learn to co-habitate.

Explanation:

The nonnative bird species will compete for resources with other species that share the same resource. Depending on the stronger animal or the bird that is more fit for that area to survive, depends on whether the native species will be effected or the nonnative species will be affected. If the invasive species has more tools to enhance their survival, then they will likely eradicate the native species. the same can be said for the Native species.

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3 years ago
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