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ehidna [41]
3 years ago
13

While sampling marine plankton in a lab, a student encounters large numbers of fertilized eggs. the student rears some of the eg

gs in the laboratory for further study and finds that the blastopore becomes the mouth. the embryo develops into a trochophore larva and eventually has a true coelom. these eggs probably belonged to a(n)?
Biology
1 answer:
alexandr402 [8]3 years ago
6 0
These eggs belonged to a(n) <span>mollusc</span>
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What is the greatest source of canton that enters the ocean from the atmosphere ?
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Answer:

Carbon is an element that is essential to all life on Earth. Carbon makes up the fats and carbohydrates of our food and is part of the molecules, like DNA and protein, that make up our bodies. Carbon, in the form of carbon dioxide, is even a part of the air we breathe. It is also stored in places like the ocean, rocks, fossil fuels, and plants.

The carbon cycle describes the flow of carbon between each of these places. For example, carbon continually flows in and out of the atmosphere and also living things. As plants photosynthesize, they absorb carbon dioxide from the atmosphere. When plants die, the carbon goes into the soil, and microbes can release the carbon back into the atmosphere through decomposition.

Forests are typically carbon sinks, places that absorb more carbon than they release. They continually take carbon out of the atmosphere through the process of photosynthesis. The ocean is another example of a carbon sink, absorbing a large amount of carbon dioxide from the atmosphere.

Some processes release more carbon dioxide into the atmosphere than they absorb. Any process that uses fossil fuels—such as burning coal to make electricity—releases a lot of carbon into the atmosphere. Raising cattle for food also releases a lot of carbon into the atmosphere. These processes that release carbon into the atmosphere are known as carbon sources.

Ideally, the carbon cycle would keep Earth’s carbon concentrations in balance, moving the carbon from place to place and keeping atmospheric carbon dioxide levels steady. However, the carbon cycle is changing because of human activity. People are releasing more carbon into the atmosphere by using fossil fuels and maintaining large livestock operations. Deforestation is depleting Earth’s supply of carbon sinks. As a result, the amount of carbon in the atmosphere is rising.

Explanation:

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6 0
2 years ago
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Rufina [12.5K]

Answer: Mrs.Connor

Explanation:I just want to go with is the flow.

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Which of the following is part of the central nervous system?
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D. All of the above
7 0
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Humans infected with Brucella species develop ________ characterized by fever, chills, sweating, muscle aches, and headache.
Dovator [93]

According to the research, humans infected with Brucella species develop <u>brucellosis</u> characterized by fever, muscle aches, and headache.

<h3>What is brucellosis?</h3>

It is a bacterial and infectious disease caused by bacteria of the brucella genus whose reservoir of this bacterium are animals and, mainly, cows, sheep, goats and pigs.

The most frequent is the appearance of general symptoms, among which fever, chills, muscle aches, among others, predominate.

Therefore, we can conclude that according to the research, humans infected with Brucella species develop <u>brucellosis</u> characterized by fever, muscle aches, and headache.

Learn more about brucellosis here: brainly.com/question/13086367

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3 0
1 year ago
A cell has 6 chromosomes. How many chromosomes will each daughter cell have if it undergoes mitosis
77julia77 [94]

Answer:

At the end of mitosis, the two daughter cells will be exact copies of the original cell. Each daughter cell will have 30 chromosomes. At the end of meiosis II, each cell (i.e., gamete) would have half the original number of chromosomes, that is, 15 chromosomes.

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7 0
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