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11111nata11111 [884]
3 years ago
11

A crater in mexico's yucatan peninsula may be the result of an impact that brought about the extinction of numerous species at t

he end of the ________ period.
Biology
1 answer:
Ann [662]3 years ago
3 0

Answer:

Cretaceous

Explanation:

From what has been examined so far, there are evidence that at the end of the Cretaceous period a very large asteroid or comet stuck the Earth. The impact was where modern day Yucatan is located, and it released such an enormous energy that it managed to change the face of the Earth. The explosion itself managed to kill off pretty much everything nearby, but there was also a very hot wave that circled the whole planet. Enormous amounts of dust and ashes were released into the atmosphere that blocked the Sun, and the volcanoes all over the globe were triggered. This caused major climate and environmental changes, leading to a mass extinction, with the most noticeable victims being the dinosaurs.

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A spectacular marine animal has a network of glassy spicules that forms a sac-like structure. This animal does not have true tis
PolarNik [594]

Answer:

Sponges use <em><u>choanocytes</u></em> or <em><u>flagellated channels</u></em> to get nutrients from the feeding cells to other parts of their body.

Explanation:

Sponges are marine animals with a sac-shaped body. The epidermis is composed of polygonal flat cells called pinacocytes and pores protected by porocytes. Under the epidermis, there is a protein matrix called mesenchyme, which is composed of spicules and <em><u>amibocytes</u></em>. By the interior side of the sponge, there are the<em><u> choanocytes</u></em>. These are ovoid cells that can be shaping the spongocoele (internal cavity of the sponge), with an extreme attached to the mesenchyme and the other extreme projected to the spongocoele, or can be grouped in spaces called <em><u>flagellated channels</u></em>.

These animals depend on water to get oxygen and food to the inside of the sac and take excrements and reproductive cells to the outside. Sponges <em>feed on small detritus particles and suspending organisms</em> that get near the animal by water streams produced by choanocytes.

Particle size is essential. Only the small ones can get through the flagellated channels, where they get stuck to the choanocytes and are encapsulated by the cells. If the choanocytes are too small, the particle is transferred to the amibocytes for digestion. These last ones also act as food storages. Excrement products are dragged by a water stream.  

 

5 0
3 years ago
What could be one possible effect on human health due to an oil spill?
mojhsa [17]

Answer: C. Oil from the oil spill could enter aquatic organisms, like fish, which could make people sick.

Explanation:

Oil spill in water body can be caused by the industrial oil discharge, emission of vehicle oil in water body.

The oil may contain toxic chemicals which could be consumed by the fishes or other aquatic organisms. The fishes and other edible aquatic organisms if consumed by human beings can make people unhealthy or sick.

7 0
3 years ago
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Why is it important for individuals to reduce their carbon footprints?
tamaranim1 [39]

Answer:It helps with the global warming problem

Explanation:Carbon traps heat so if we release to much of it the earth is gonna get hotter melting polar ice caps causing the sea level to rise if we don't stop that water is gonna cover a lot more of the earth

4 0
3 years ago
Read 2 more answers
The diagram shows a bean plant growing in soil.
Sphinxa [80]

Answer:

A

Explanation:

5 0
3 years ago
Select the best description of amino acid metabolism: Group of answer choices Amino acid metabolism does not occur. Aerobic meta
Stolb23 [73]

Answer:

Aerobic metabolism of amino acid requires deamination

Explanation:

Living system can be defined as the internal systems of organisms and how materials circulate within organisms.

Generally, these living systems are self-organized life forms and are known to be very much interactive with their surroundings or environment. Also, living systems are dependent on the flow of information, matter and energy at various levels.

Some examples of living systems in organisms are respiratory system, nervous system, digestive system, and circulatory system.

Additionally, living systems comprises of the following components; cells, organs, muscle, tissues, blood, etc., which are typically used for carrying out various bodily functions such as respiration, digestion, metabolism, etc.

Metabolism can be defined as a set of chemical processes carried out by a living organism such as humans, plants and animals, in order to sustain life.

Aerobic (oxygen-using) metabolism can be defined as a biological process that typically involves the extraction of energy from any carbohydrate source such as amino acids, fatty acids, etc.

Basically, an aerobic metabolism of amino acid is a process that requires deamination.

Generally, proteins comprises of amino acids and it is responsible for maintaining the proper functioning of the body system.

Transamination can be defined as a biochemical process which typically involves the removal of amino groups from amino acids and transferring them to a ketoacid (amino acid without an amine group), so as to form new amino acids.

Basically, transamination is a reversible oxidation-reduction reaction that is responsible for the deamination of amino acids.

4 0
3 years ago
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