CHEMISTRY MIDDLE SCHOOL

Which soil horizon contains a layer of partially weathered or unweathered rock? A. E
B. R
C. O
D. C

Answers

Answer 1
Answer:

Answer:

B.  R

Explanation:

A layer of partially weathered or unweathered rock is present in R soil horizon
Answer 2
Answer:

Answer: Option (B)

Explanation: The R-layer represents the unweathered rocks that are located below the surface and is the lowest layer in the soil profile. Here, hard rocks are found which are difficult to break, and are breakable with heavy machineries only. This R-layer makes the foundation of the soil profile that supports the entire overlying series of layers.

Thus, the correct answer is option (B).

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Protists are often grouped according to whether they are plant-like, fungus-like, or________. A.
bacteria-like

B.
arcahebacteria-like

C.
animal-like

D.
virus-like

Answers

Your answer to this question is C: Animal-like
Protists are often grouped according to whether they are plant-like, fungus-like, or animal like

You overhear someone say that two objects with the same mass have the same gravitational potential energy Do you agree? Explain.

Answers

The gravitational potential energy not only depends on the mass of the substance but also on the height it positioned. Hence, two objects with same mass does not have same potential energy if they are not in same height.

What is gravitational potential energy?

Gravitational potential energy of an object is the energy generated by virtue of  its position in gravitational field.  Gravitational force is exerted by one object by which it attracts other objects into its centre of mass.

The gravitational force is dependant upon the mass of the object as well to the distance between the objects. Similarly the potential energy p is proportional to the mass m, gravity g and the height from the surface h.

Hence p = mgh.

As per this relation potential energy is not only affected by the mass but also the height at which the objects are located.

If an object is placed at a height higher than other object having same mass then it stores greater potential energy. Hence, we can't agree with the statement .

To find more on potential energy refer here:

brainly.com/question/24284560

#SPJ2

Answer:

the above screenshot has the answers

Every complex cell has DNA in its _______.vacuoleA.cytoplasm

B.membrane

C.wall

D.nucleus

Answers

The answer would be D

How long would it take a typical jet to travel the sun from earth?

Answers

Answer:

To travel this far, it would take 19 years.

You and your friend live in different states and plant identical hydrangea bulbs in your garden. When they bloom, you send each other pictures. You notice that even though you bought the exact same kind of plant, your hydrangea flowers are blue and your friend’s are pink! On a hunch, you each measure the pH of your soil and find that your soil is a little acidic and your friend’s is a little basic. Why do you think the flowers have different colors?

Answers

Since the hydrangeas are changing color depending on whether the soil is acidic or basic, they must have an indicator. This means that any hydrangea planted in acidic soil will have blue flowers and any hydrangea planted in basic soil will have pink. One common indicator present in many plants is anthocyanin, so maybe hydrangeas contain that chemical.

I think the soil has a lot to do with the reason why the flowers have different colors.

Soil

A soil is a mixture of organic matter that supports life. There are 4 types of soil which are sand, silt., clay and loam soil.

A hydrangea flower is affected by the acidity of the soil to influence the color it turns out to be.

The acidic property in the soil used to plant the flower turned it blue,

while The alkaline property in the soil turned the color pink.

Learn more about soil here:

brainly.com/question/13195865

Did you know you have to answer 1000 questions to be able to message someone?

Answers

Answer: i didnt know that

Explanation:

Answer: Yes this is in fact true

Explanation:
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