Which is the best example of organisms that have been naturally selected?

Answers

Answer 1

Answer: Natural selection is when species learn to adapt totheir environment. They could (1) differential reproduction, that is, not allorganisms are able to reproduce to their fullest capacity because nature cannotsimply sustain it and (2) acquire genes, that is heredity. Certaincharacteristics of organisms tend to survive if it continues to strive. If itsurvives, this trait is passed down to the next generations forgetting theother traits but only the one who could survive the environment. Therefore itis true that naturalselection is when ‘organisms inherit advantageous traits, and tend to reproducemore successfully than other organisms’. One best example is the extinction ofother animals and some with the same species retains.

Answer 2

Answer: One example is the snowy white owl. It came from the forest and rested and lived near a town. In the town, there was a lot of pollution, so the snowy owl evolved to become more blended with pollution and smoke, a brown or black color. So now, the snowy owls were technically extinct by natural selection and the darker shades of owls survived because of their adaptation to the environment and the color of their feathers.

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Which of the following ideas is supported by Darwin's observations of local variation among tortoises in the Galapagos islands?A: artificial selection B: adaption C: acquired characteristics D: tendency towards perfection

The following question refers to “The Pit and the Pendulum” by Edgar Allan Poe.How does the narrator react to the “dread sentence of death” handed down to him?

He blacks out.
He tries to escape.
He yells at the judge.

Answers

The narrator reacted to the dreaded sentence of death handed down to him BY BLACKING OUT.

The Pit and the Pendulum is a short story written by Edgar Allan Poe. The story is about a prisoner, who endured much torment. The story opens with the trial of the narrator of the story. The narrator was been tried by a panel of judges. At the end of the trial, the narrator was sentence to death and this makes him to black out.

He blacks out and this is the way the narrator reacts to the "dread sentence of death" handed down to him. The correct option among all the options that are given in the question is the first option. He blacked out hearing the sentence because he was already drugged. I hope the answer helps you.

What are three ways that antibodies help fight infection?

Answers

1. agglutination of particulate matter, including bacteria and viruses, 2. opsonisation or coating over bacteria to facilitate recognition and phagocytosis by the phagocytes and 3. neutralization of toxins released by bacteria.

BRAINLIEST TO FIRST CORRECT. 1. What can scientists learn about by studying Ice? (Air Temperature, Ocean Temperature, Carbon Dioxide Levels, Kinds Of Plants, or Rainfall)?
2. What can scientists learn about by studying Chemical Isotopes In Foraminifera? (Air Temperature, Ocean Temperature, Carbon Dioxide Levels, Kinds Of Plants, or Rainfall)?
3. What can scientists learn about by studying Fossilized Pollen Grains? (Air Temperature, Ocean Temperature, Carbon Dioxide Levels, Kinds Of Plants, or Rainfall)?
4. What can scientists learn about by studying Tree Rings? (Air Temperature, Ocean Temperature, Carbon Dioxide Levels, Kinds Of Plants, or Rainfall)?

Answers

The answer to the questions are :

Ocean Temperature, Carbon Dioxide, Air Temperature
Carbon Dioxide Levels
Kinds Of Plants.
Kinds Of Plants, or Rainfall.

What do scientists learn form their studies ?

The scientists learn from the ice cores about the air and other ocean temperatures and also get to know about the Carbon dioxide levels. The scientists studying Foraminifera get to learn about the amount of carbon dioxide in the air. By analysis of the pollen they learn about the changes in vegetation. From the tree rings, they learn about the tress and weather conditions.

Find out more information about the scientists.

brainly.com/question/21750948.

Final answer:

Scientists can learn about past air temperatures and carbon dioxide levels from ice cores, past ocean temperatures from chemical isotopes in foraminifera, historical plant types from fossilized pollen grains, and past air temperatures and rainfall from tree ring patterns.

Explanation:

By analyzing different proxies, scientists can deduce valuable information about Earth's past climate and environmental conditions. Here are the specific insights gained from the proxies mentioned:

Ice: Studying ice cores, especially from Antarctic ice, enables scientists to determine historical air temperature, carbon dioxide levels, and more by examining trapped air bubbles and biological substances.
Chemical isotopes in Foraminifera: By analyzing these isotopes, scientists can deduce past ocean temperatures based on the coiling direction of the Foraminifera's shells found in sediment cores.
Fossilized pollen grains: These can indicate the kinds of plants that were present historically, which, in turn, reflects climate conditions and local ecosystems.
Tree rings: The number and characteristics of annual rings in trees can reveal historical air temperature and rainfall patterns, as well as environmental conditions and events like droughts or volcanic eruptions.

Which of the following statements about the tundra is true?a. The tundra has a dense covering of trees.
b. There are two main categories of the tundra biome.
c. Temperatures in the tundra range from extreme highs to extreme lows.
d. The tundra biome does not support animal life.

Answers

The statement about the tundra that is true is that there are two main categories of the tundra biome.

Answer:

B. There are two main categories of the tundra biome.

Explanation:

A solution that is a 4 on the pH scale is a _____.

Answers

A solution is acidic when its pH is below 7, and basic otherwise.

hence this solution is acidic.

Is Down Syndrome more common in a certain group of people?
How common is it?

Answers

I do not think it's more common in a certain group. It's one of the most common genetic birth defects. It's estimated that 1 in 700 babies are born with down syndrome (this is about 6,000). There are over 400,000 people in the US with Down syndrome.

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Many cacti, such as saguaros and barrel cacti, have large stems and no leaves. What function of leaves is taken on by the stems of such cacti?