BIOLOGY HIGH SCHOOL

Soil reaction is _______. a. the measure of the acidity or alkalinity of soil
b. the highest amount of cations soil can absorb
c. determined by the types of minerals in the soil
d. the layering of soil into horizons

Answers

Answer 1
Answer: A. the measure of the acidity or alkalinity of soil Alkalinity is the name given to the quantitative capacity of an aqueous solution to neutralize an acid.
Answer 2
Answer:

The correct answer is option A

Soil reaction can be defined as the measure of acidity or alkalinity of soil. The pH of the soil or the reaction of the soil is an measurement or indication of the alkalinity or acidity of the soil. This defines the nature of the soil, whether the soil is acidic or basic in nature. If the amount of hydrogen ions is more then the soil is acidic and if the amount of hydrogen ions are less then the soil is basic.

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Which statement about energy from Earth's interior is true?A) It is the greatest source of energy for Earth. B) It is the second-largest source of energy on Earth. C) It is the type of energy most often used by humans. D) It is the easiest type of energy to harvest for use.
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What happens to Earth when it is farthest from the sun?It moves fastest.

It stops rotating.

It moves slowest.

It stops revolving.

Answers

Answer:

slower

Explanation:

winter days shorter farther from the sun causes stuff
It would move slower because the orbit would be bigger and the bigger the orbit is the longer a revolution would be... (EXAMPLE) it would be faster if a circle road was tiny and the car was moving at a steady pace and there is another road in a bigger circle moving at the same pace but it would still be longer than the other one that is revolving.

Which is the best example of organisms that have been naturally selected

Answers

Dark-Colored peppered moths on soot-covered tree bark during the Industrial Revolution in England

3. Prokaryotic cells have membrane enclosed cell structures.
O
True
O
False

Answers

Prokaryotic cells lack membrane enclosed cell structures.

What are the characteristics of prokaryotic cells?

Prokaryotes are single-celled organisms belonging to the domains Bacteria and Archaea. Prokaryotic cells are much smaller than eukaryotic cells, have no nucleus, and lack organelles.

Examples of prokaryotes are blue-green algae, bacteria and mycoplasma. Among prokaryotes, bacteria are the most common and multiply very fast.

They lack a nuclear membrane. Mitochondria, Golgi bodies, chloroplast, and lysosomes are absent. The genetic material is present on a single chromosome. The histone proteins, the important constituents of eukaryotic chromosomes, are lacking in them.

Learn more about prokaryotic cells:

brainly.com/question/29771587

#SPJ2

Answer:

False

Explanation:

Prokaryotic cells lack a membrane enclosed nucleus and organelles.

An organism with five pairs of chromosomes can have__ genetic possibilities from independent assortment of its single gamete.a.?

Answers

Answer:

The correct answer would be 32.

It can be calculated with the help of simple formula 2ⁿ

2ⁿ represents the possible number of combination of gametes produced by an organism.

n represents the haploid number of chromosome of an individual

Thus, the possible number of gametes produced by an organism with 5 chromosome pairs would be equal to 2⁵ = 2x2x2x2x2 = 32.

Answer:

An organism with five pairs of chromosomes can have 32

genetic possibilities from independent assortment of its single gamete.

32 is the answer

Explanation:

PLATO

Sustainability means developing practices which protect the environment while also providing for human needs. Which of the following changes would be most helpful in achieving sustainable agriculture? A)Clearing land for agriculture by cutting down trees instead of burning them B)Rotating crops to replenish the soil with nutrients C)Tilling the ground to remove weeds and create uniform crops D)Growing crops that produce only renewable resources

Answers

The correct answer is (D)Growing crops that produce only renewable resources

The by products  of the crops such as corn stovers is used to produce energy without harming the soil quality or increasing the rate of soil erosion. The crops like sunflower, canola can produce bio-oil and bio-fuel which is a renewable fuel. This type of plants should be grown so that renewable resources can be produced. This means that this practice is sustainable as it is protecting the environment and also providing resources for human needs.
Clearing land is not a sustainable practice in any form, so not A. Crop rotation is important for maintaining soil fertility, but is not necessarily sustainable. It's definitely not C. It is likely D because using only renewable resources is top notch sustainability.

What role does pyruvic acid play in cellular respiration?

Answers

Pyruvic acid or pyruvate is a product of broken-down glucose during glycolysis. It is an ingredient in cellular respiration processes including the Kreb's cycle where it is transformed into lactate. It is also used to supply and distribute oxygen to cells through the citric acid cycle.
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