BIOLOGY HIGH SCHOOL

The outer membrane which covers the lungs?

Answers

Answer 1
Answer: it's called the pleura!

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Which of the following statements is true? The buildup of carbon dioxide in the atmosphere causes the greenhouse effect. An increase in pressure causes an increase in reaction rate. The formation of gas bubbles is an indication of a chemical change. all of the above

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All the above ........

D- All of the above  I think

Salvatore had grown tired of his fish tank and would like to get rid of the fish and contents of the tank in a nearby freshwater canal. Which argument presents the most devastating consequences of Salvatore's dumping of the tank?

Answers

Salvatore's decision to dump his fish tank and its contents into a nearby freshwater canal could have devastating consequences for the ecosystem.

The non-native fish species from the tank could outcompete and prey on native fish, leading to disruptions in the natural balance and potentially causing local extinctions.

The uneaten fish food and waste from the tank could lead to water pollution, harmful algal blooms, and a decline in water quality, affecting aquatic plants and other animals in the canal.

This irresponsible action could harm the delicate biodiversity of the canal, disrupting the entire ecosystem and leading to long-term environmental damage.

Know more about biodiversity:

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the fish would not be able to live their because the could not find food and it would be too shallow in certain areas

Question 3(Multiple Choice Worth 5 points)(07.06 MC)
Which of the following best describes an example of a specific internal response to harmful bacteria?
Skin serves as a physical barrier that prevents bacteria from entering the body.
Saliva contains enzymes that destroy bacteria and prevent infection.
Bacterial infection causes the release of histamine, which leads to inflammation and swelling.
Antigens trigger the production of antibodies, which mark bacteria for destruction.

Answers

Answer:

Antigens trigger the production of antibodies, which mark bacteria for destruction.

Explanation:

The question is talking about internal response to bacteria so we have to look at what happens inside the body pertaining to bacterial infection, so the answer is "Antigens trigger the production of antibodies, which mark bacteria for destruction".

Answer:

A .....the skin is the bodies first line of defense

Explanation:

The first line of defence is non-specific and aims to stop microbes from entering the body. 

Select the items that describe economic growth. Unemployment is very high. Businesses make more products. Consumers spend more money. Producers earn more revenue. It is part of the economic cycle.

Answers

Answer;

  • Businesses make more products.
  • Consumers spend more money.
  • Producers earn more revenue.

Explanation;

  • Economic growth refers to the upward trend in the economy of a country or a state. It is the increase in the country's produce, that is goods and services over a period of time.
  • Economic growth is marked by the creation of more profit for business, thus the price of stock or goods increases. As a result the rate of employment increases as the companies have more capital to invest and employ more people.
  • As the rate of employment increases, the level of income also increases which means the consumers will have more money to spend on buying more goods and services.
I believe that the items that describe economic growth are Business make more products, consumers spend more money, and producers earn more revenue.

Which statement best describes a human influence on the biogeochemical cycles?A. increased eutrophication caused by high levels of nitrogen and phosphorous
B. increased nitrates available due to inaccurate methods of denitrification
C. increased global warming due to alternative energy sources
D. increased amount of water that is available to freshwater ecosystems

Answers

The statement that best describes a human influence on the biogeochemical cycles is A) increased eutrophication caused by high levels of nitrogen and phosphorous. 

The correct answer is A.

An increase in levels of nitrogen and phosphorus can cause eutrophication, which often leads to algal and phytoplankton blooms in the ecosystems and the formation of dead zones or toxins in the water. The excess nitrogen and phosphorus enter the water from agriculture water runoff and sewage release .

Darwin hypothesized that there are definite steps to natural selection. Consider the model here. Use the Roman numerals (I - III) to guide you through the steps. Which is an accurate description of Darwin's hypothesized theory of natural selection? A) Sexual reproduction of bacteria cause variation. Some bacteria survive and some do not. Over time all of the bacteria should become extinct. B) In any population, variation exists. Some bacteria are resistant to antibiotics. Most bacteria die, but the bacteria that are resistant survive and reproduce. C) In a population of bacteria that are exposed to antibiotics, some bacteria change their genetic make-up and survive. The new genetic make-up is passed on to offspring. D) There is a change in the environment: an antibiotic is added. Some of the bacteria are capable of changing to the new environment. They survive and reproduce, passing along their favorable traits.

Answers

Answer: Option D

Explanation: Natural selection come into action when some change takes place in the environment which affects the survival of the organism. Here the change is addition of antibiotics. So the bacterial cells which were able to adapt to the change, they survived and rest were killed. These resistant bacterial cells would pass on the genes to next generation and gradually population of resistant bacteria would increase.
I believe the answer is b
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