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2 years ago

Which of the following best describes succession?

Biology

1 answer:

Gwar [14]2 years ago

8 0

i think it is B or A they make the more sense hope this helps ✌

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5(a+4)-6a+1=12 plz help its due today

irga5000 [103]

Answer:

a = 9

Explanation:

5(a + 4) - 6a + 1 = 12

5a + 20 - 6a + 1 = 12

5a - 6a + 20 + 1 = 12

-1a + 21 = 12

-21 -21

--------------------------------

-1a = -9

/-1 /-1

---------------------------------

a = 9

3 0

2 years ago

Read 2 more answers

Identify the following chromosomes mutations

topjm [15]

Answer: cancer

Explanation:

6 0

2 years ago

What is one of the root causes of environmental problems?

Goryan [66]

Answer:

here are some:

1) market failure, 2) the tragedy of the commons, and 3) the underprovisioning of public goods. One of the first principles of free markets is that for them to work effec- tively, the full costs of an activity must be borne by the involved parties.

Explanation:

hope this helps <3

8 0

2 years ago

If an ovum has chromosomal nondisjunction which conditions(s) could result in the embryo

lions [1.4K]

Down syndrome can occur as the embryo has an extra chromosome. As well as this the embryo may die.

3 0

2 years ago

2. Beginning with the superior vena cava, trace the path followed by a red blood cell as it passes into and through the heart, t

Katen [24]

Answer:

BLOOD PATHWAY:

Body > superior and inferior vena cava > right atrium > tricuspid valve > right ventricle > pulmonary semilunar valve > pulmonary artery > lungs > pulmonary vien > left ventricle > bicuspid/mitral valve> left ventricle > Aortic semilunar valve > Aorta > Body

The pathway goes like this:

From the body (we don't say first because this is a cycle), unoxygenated blood collected goes to the heart via the INFERIOR and SUPERIOR VENA CAVA then it empties into the RIGHT ATRIUM from there it passess through a valve called TRICUSPID valve, which prevents backflow of blood to the right atrium. The blood goes to our first pumping chamber, RIGHT VENTRICLE. The right ventricle pumps the blood through the PULMONARY SEMILUNAR VALVE which leads to the PULMONARY ARTERIES, which happens to be the only arteries that carry unoxygenated blood. From there it goes to the lungs to pick up oxygen and rid itself of carbon dioxide. The blood then goes back into the heart via the PULMONARY VEINS and like the latter, they are the only veins that carry oxygenated blood.

The blood then goes back into the heart, emptying into the LEFT ATRIUM. From there it goes through the BICUSPID VALVE or MITRAL VALVE and to the last and thickest pumping chamber, the LEFT VENTRICLE. The left ventricle pumps the blood through the AORTIC SEMILUNAR VALVE which opens out to the AORTA.

And at last, it goes back to your body.

6 0

2 years ago