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AysviL [449]
3 years ago
15

What scientific evidence would show that two species of birds are closely related? Question options:

Biology
2 answers:
DaniilM [7]3 years ago
7 0
The two bird species have similar DNA sequences
solmaris [256]3 years ago
4 0
The two bird species have similar DNA sequences
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Usain bolt was on his way to run a race. Before he left the house, his friend gave him annapple and said this will help you win
Blababa [14]

Answer:

It will help him because firstly,an apple is a vitamin and according to the six classes of food, vitamin's function to the body is to help fight disease and harmful organism therefore making you strong.So if Usain bolt eats that apple it will make him strong. (Reminder: pls follow me and i will follow u oo)

5 0
3 years ago
Mr. Helms was admitted to the hospital with chest pains and shortness of breath. His wife was panicked since her 72-year-old hus
Lynna [10]

Answer:

Explanation:

1- the purpose of blood flow-circulatory system- is to convey  Oxygenated blood, oxygen bonded with haemoglobin in the RBC with Nutrients - and distributed these through the arteries  and capillaries  away from the heart,  to reach the cells and tissues, and transported the wastes of theses cells and tissues , with C02 through the veins back to the heart and the kidney.

2. During diastole,deoxygented blood from the inferior and superior vena cavae entering the R.atrium, passes through the tricuspid valve into the Right Ventricle. Simultaneously, oxygenated blood returning through the pulmonary veins enters the left Atrium,emptied  through the bicuspid valve into the Left.Ventricle.

During systole, the two ventricles contracts. The Right ventricle contracts, the pressure of the blood forces  the tricuspid valve to close,and therefore de -oxygenated blood pushes the pulmonary  valves to open and blood passes through the pulmonary artery to reach the lungs where exchanges of oxygen with carbon dioxide occurs.The blood is now oxygenated and returns to the left atrium via pulmonary veins.

Simultaneously, the left ventricle contracts,the oxygenated blood it contains forced the bicuspid valve to close so that blood is  forced through the aortic valve  to empty into the aorta into  the systemic circulation,branches of the carotid artery supplies the heart from the aorta.

The Whole cycle continues.

8 0
3 years ago
50 points to whoever does this biology I need this practice work ASAP
Darya [45]

Answer:

Please provide the question you want help with

3 0
3 years ago
Read 2 more answers
The major disadvantage of a blood-brain barrier is that ____.​
aalyn [17]

<span>The answer is a certain required chemicals must be actively transported.  Blood brain barrier is a selective membrane that separates blood circulating from the brain and the fluid of extracellular in the central nervous system. This is also called a filtering mechanism, the capillaries that carry blood to the brain and spinal cord tissue blocking the path way of the certain substance.</span>

4 0
3 years ago
Provide the complementary DNA for the following DNA sequence:<br> A T G C T A G G G T A A T T C G
salantis [7]

Answer:

T A C G A T C C C A T T A A G C

Explanation:

A = T and T = A

Remeber Apple goes with the Tree

C = G and G = C

Remember Car goes in the Garage.

7 0
3 years ago
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