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3 years ago

(4. Synthesize How did Darwin's

Biology

1 answer:

zysi [14]3 years ago

8 0

Answer:

Darwin observed marine fossils in the mountains and the uplift of land by an earthquake which supports Lyell's theory.

Explanation:

Lyell's theory of an ancient Earth states "the formation of Earth's crust took place through countless small changes occurring over vast periods of time".
So Darwin had an observation of marine fossils that uplifted the land through many years by earthquake. Which was the same thing Lyell's explained.
According to known natural laws, It takes lots of time to form the earth's crust.

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While digesting food, the liquid food then enters the small intestine where the acid is _____________________, and enzymes break

djyliett [7]

Answer:

While digesting food, the liquid food then enters the small intestine where the acid is _neutralized_, and enzymes break down fat, protein and carbohydrates for absorption by tiny hairs called villi.

Explanation:

The small intestine is where most chemical digestion occurs. Most of the digestive enzymes that act in the small intestine are secreted by the pancreas and enter the small intestine through the pancreatic duct.

The enzymes enter the small intestine in response to the hormone cholecystokinin, which is produced in the small intestine in response to the presence of nutrients. The hormone secretin also causes bicarbonate to be released into the small intestine from the pancreas in order to neutralize the potentially harmful acid that comes from the stomach.

This is to protect the cells lining the small intestine from the acid.

5 0

3 years ago

Which process is part of the carbon cycle and is least dependent on the water cycle?

Anna71 [15]

Answer:

oxygen

Explanation:

we need oxygen don't mind me

5 0

3 years ago

Single gene pairs play a crucial role in development. However, it is more common that developmental outcomes occur because of th

hoa [83]

Answer;

-Polygenic inheritance

Explanation;

-Polygenic inheritance occurs when one characteristic is controlled by two or more genes. Often the genes are large in quantity but small in effect.

-Examples of polygenic inheritance in nature can be found in many places: in human height, skin color, and hair color; in animal size, longevity, or disease resistance; and in plants with grain color, length of maize, or flower size. All of these traits are influenced by multiple genes and considered polygenic.

3 0

3 years ago

Tyra created a chart that compared DNA and RNA for her science class.

KATRIN_1 [288]

Answer:

Okay, 3 of the answer choices on this are wrong. The only correct answer is "DNA remains in the nucleus while RNA leaves the nucleus."

Explanation:

1. DNA is single-stranded while RNA is double-stranded

- INCORRECT. This is the opposite. RNA is single-stranded, whereas DNA is double-stranded.

2. DNA remains in the nucleus while RNA leaves the nucleus.

- This is true because the RNA must leave the nucleus to undergo translation into a ribosome in the cytoplasm.

3. DNA contains a ribose sugar while RNA contains a deoxyribose sugar.

- INCORRECT. This is the opposite. DNA contains deoxyribose sugar, whereas RNA contains ribose sugar.

4. DNA has bases of A, G, C, and U while RNA has bases of A, G, C, and T.

- INCORRECT. This is the opposite. DNA have bases of A, G, C, T, whereas RNA has bases of A, G, C, U. RNA sequences never have the bases of Thymine (T) as the same goes with DNA sequence that does not have the base of Uracil (U).

Honestly, I don't if the question are selectable choices or only one choice answers. There are three wrong answers and one correct answer.

3 0

3 years ago

What are three things you can do to prevent heart disease?

weeeeeb [17]

hi there

to answer this response it is :Control your blood pressure.

Keep your cholesterol and triglyceride levels under control.

Stay at a healthy weight.

Eat a healthy diet.

Get regular exercise.

Limit alcohol.

Don't smoke.

Manage stress

i hope this helps you out

Have a great after noon

FaithRawlins14

4 0

3 years ago

Read 2 more answers