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Sergeu [11.5K]
3 years ago
14

What is the main organ of the circulatory system? PLEASE ANSWER QUICK

Biology
1 answer:
Hitman42 [59]3 years ago
6 0

Answer:  Heart

Explanation:  As a hollow, muscular pump, its main function is to propel blood throughout the body correctly

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A milk snake looks similar to the deadly coral snake. This is an example of A) warning coloration adaptive radiation B) cryptic
Damm [24]
In this case, c) mimicry is the answer. In Batesian mimicry in which harmless animals mimic toxic animals. In this case, I assume the milk snake is harmless and the coral snake is venomous. Since the milk snake has a trait similar to deadly coral snake, less animals would eat it thinking it is dangerous. Over time all the milk snake that look like the deadly coral snake would survive leading to evolution by natural selection. This would lead to more and more milk snake mimicking the resemblance of the deadly coral snake.

a) The deadly coral snake has a warning color adaptive radiation. If the question had described the environment and how the snaked adapted to the environment via warning coloration. This would've been correct.

b) cryptic coloration is more about camouflage with the environment. If the question had state how a certain feature help one of the animals blend into the background. This would've been correct.

d) I'm not sure whats different between this and a so i'll consider them both the same.

3 0
3 years ago
Which of the following statements about carotenoids is NOT true? Carotenoids include red, orange, and yellow pigments. Carotenoi
kvv77 [185]

       The right answer to this question is option D. Carotenoids are categorized into two major divisions: carotenes and beta carotenes

       First, let's check option A, it says that the carotenoids include red, orange and yellow pigments, that's true, we can check that on lab for example, a vegetable that can be mentioned here are carrots, it has lots of this and it's very healthy too, and remember, there isn't a single animal that can produce carotenoids, so they need to grab it from nature.

       The second option, B. says that sometimes carotenoids are sometimes called as acessory pigments, that's true too, some studies consider them acessory pigments, so, they're not alone there, there are different kinds of pigments that can be on that plant, and they're also very important for the animals. Option C refers to beta carotene as the most abundant carotene in plants, that's true too, we can also find other kinds of carotenoids on plants, but this one as it's seen in lab, is the most common one. The last one, D, isn't true, the two major divisions are: Xanthophylls and Carotenoids, beta carotenoids are a type of carotenoids, not a different group.

8 0
3 years ago
A 27 year-old presents with right-sided thoracic myofascial pain. a 25-gauge 1.5-inch needle on a 10 cc controlled syringe with
saveliy_v [14]
This is a case of a patient with right sided thoracic myofascial (involving the muscles and the overlying fascia) pain involving 3 muscle groups that was injected with a local anesthetic (Bupivacaine) which are rhomboid major, rhomboid minor, and levator scapular muscles. The CPT code involving trigger point injections of 3 or more muscle groups is CPT 20553.
8 0
3 years ago
"Exhaled air containing __________ bubbles into water and reacts with water to produce carbonic acid. This will cause the soluti
Lera25 [3.4K]

Answer: Exhaled air containing Carbon dioxide bubbles react with water to form carbonic acid . The solution turn acidic and turn from green to yellow.

Explanation:

Exhaled carbondioxide bubbles reacts with water to form carbonic acid, the solution will turn acidic. Carbonic acid is a weak acid that decrease pH. An indicator of it shows that the solution turns from green to yellow.

Co2+ H2O= H2Co3.

The solution then dissociate to give H ion and hydrogen carbonates ion.

4 0
4 years ago
Hydrogen peroxide breaks down into water and oxygen, why is this a chemical reaction
aalyn [17]
It's a decomposition reaction. It's a chemical reaction because one substance (H2O2) is breaking down and becoming 2 completely new substances (H2O and O2)
4 0
3 years ago
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