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irinina [24]
3 years ago
14

How was the Earth different 4.6 billion years ago than it is today

Biology
1 answer:
vfiekz [6]3 years ago
8 0
The geological features were different. And humans development was different.
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Before mitosis begins which happens before the nucleus starts dividing
Papessa [141]

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The DNA begins to replicates

Explanation:

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Biologists notice that a population of ferrets introduced into a reserve begins to show exponential growth. The figures represen
sesenic [268]

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A. 50, 88, 145, 227

Explanation:

The correct option would be option A.

<u>When something grows exponentially, it means the growth increased at a high rate. More specifically, each rate of increase results in more or less doubling of the preceding rate. For example, if the current value of growth rate is 2 for a substance that is growing exponentially, the next growth rates will be 4, 8, 16, etc.</u>

<em>In this particular illustration, the only option that best fit into an exponential system is option A in which the growth rate more or less doubles each time from 50 to 88, from 88 to 145, and then from 145 to 227.</em>

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3 years ago
Bacteria can be beneficial. Which of these is an example of how bacteria are beneficial? A) Break down cellulose in some animals
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Bacteria can be beneficial. The example of how bacteria are beneficial is that they A. break down cellulose in some animals' digestive systems. 
3 0
3 years ago
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What are air pollution and its causes and effects​
emmasim [6.3K]

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Air pollution is known to cause irritation in the eyes, lungs, nose, and throat. It creates respiratory problems and exacerbates existing conditions such as asthma and emphysema. When continually exposed to air pollution, humans become at higher risk for cardiovascular disease.

<h3>Please mark me as Brainliest</h3>

4 0
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After phosphates and nitrates have entered a water
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After phosphates and nitrates enter a water system, the steps of eutrophication include the rapid growth of algae, death of underwater plant species, depletion of oxygen in the water, and the death of fishes and invertebrates. The correct option would be B.

Eutrophication refers to the excessive enrichment of water bodies by nutrients such as phosphates and nitrates thereby facilitating the rapid growth of some aquatic species with negative effects.

Once a water body becomes excessively enriched with phosphates and nitrates, the following is a sequence of events that follows:

  • Algal bloom: the nutrients facilitate the rapid growth of algae
  • The bloom of algal species results in the death of underwater plants as a result of inadequate light.
  • The death of the underwater plants and the accompanying microbial activities in decomposing them cause oxygen levels in the water to drop.
  • Reduction in oxygen level causes fishes and other water invertebrates to die due to hypoxia

Therefore, the correct steps of eutrophication according to the illustration is IV, II, I, and III.

More on eutrophication can be found here: brainly.com/question/13232104

6 0
3 years ago
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