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Answer:

120 joule.

Explanation:

Given

For the stone X

Mass (m) = 2 kg

Height (h) = 2 m

Acceleration due to gravity (g) = 10 m/s²

Then we have the formula to calculate the potential energy

P.E 1 = mgh

= 2 * 10*2

= 40 joule

Now for Stone Y

mass (m) = 4 kg

height (h) = 4 m

acceleration due to gravity (g) = 10 m/s²

Now

P. E2 = mgh

= 4 * 10* 4

= 160 joule

Now the difference between their potential energy is

= P. E2 - P. E 1

= 160-40

= 120 joule

Hope it will help you :)

Answer:

its biotic

Explanation:

Chicken egg is biotic.

Biotic components are living organisms while abiotic components are nonliving organisms. All biotic components are living components of ecosystem. Bacteria and birds, animals  are living components.

Abiotic components are non living components. sunlight, water and temperature are the non living components. Biotic factors are producers, herbivores and omnivores.

Abiotic components are physical and chemical components that act on the living components. In chicken cell the yolk which is living cells.

Biotic components also include the waste from living things and dead organisms. Earth have many biotic components. The surface of Mars has no biotic components.

Therefore, Chicken egg is biotic.

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Answer:

A

Explanation:

Since the law of conservation of mass is valid under all circumstances, hence, mass always remains the same, whether a substance undergoes physical change or chemical change

Answer:

e cell wall that is the only one I am sure of because I can hardly see the rest

Answer:

A. DNA contains codes for proteins, Which are necessary for the growth and functioning of an organism

Explanation:

Answer: C

Explanation: Think of it this way, which ever has the most is what answer would be. So they come across 3 capitals with K its gonna be KK not kk.

Hope this helps

The genotype is defined as the genetic makeup of an organism, or the set of alleles. The cross between Kkww and KKWw will result in 25% of the progeny having genotype KKww.

The correct option is:

Option C. KKww

Find the attachment for the Punnett square, given below.

The cross between Kkww and KKWw will result in the gametes as:

The progeny having genotype as KKww will be 4 or 25%.

Therefore, Option C is correct.

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Answer:

B. Osmosis

Explanation:

Answer:

the nitrogen cycle, the water cycle, and the carbon cycle

Explanation:

The water, carbon, and nitrogen cycles move nutrients through the different parts of an ecosystem. Water moves through organisms and the environment in different phases. Carbon moves through an ecosystem in carbon dioxide, minerals, and organic compounds. Nitrogen moves through an ecosystem in nitrogen gas, ammonium, nitrates, and organic compounds.

The biogeochemical cycle is a pathway that circulates the chemicals through the abiotic and the biotic factor. The nitrogen, water, and carbon cycle through various regions of an ecosystem.

The biogeochemical cycle is the movement of the chemicals and compounds of carbon, nitrogen, and water in the biosphere (biotic) and the atmosphere, lithosphere, and hydrosphere (abiotic) spheres of the earth.

These cycles move the nutrient through different spheres in the form of inorganic and organic compounds. It is an essential part of the ecosystem as they regulate the flow of the natural elements.

Therefore, option 1. nitrogen cycle, option 2. water cycle, and option 3. carbon cycle move through various parts of an ecosystem.

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Answer:

B. To efficiently communicate with others

Explanation:

picture

Answer:

B

Explanation:

Answer:

lungs,heart, stomach, and livers

Explanation:

I thinks what an immune system is

Answer:

important details about the immune system : it protects organisms from diseases, it can be self-distructive, white cells make your immune system work , and sleepless night hurt your immune system

Explanation:

Answer:I’m stuck on the same question

Explanation:

Answer:

D

explanation: it literally has physics in its name

Answer: changes in heat energy change temperature

Explanation: heat energy can be thought of as energy in individual atoms or molecules, which vibrate more as energy increases. Temperature is a measure of heat energy. For example, many substances expand as heat energy causes it atoms/molecules to vibrate more and occupy more space. We can use this property to measure energy as temperature by using the expansion of a liquid as in thermonmeters.

Answer:

Hope it helps

Answer: Gas

Explanation:

Look through the lesson lol i know your school

Nebulae are different luminous regions of the interstellar medium that can be made up of cosmic dust as well as ionized, neutral, or molecular hydrogen, hence option C is correct.

All the stuff between stars is referred to as interstellar matter by astronomers, and the complete collection of interstellar matter is referred to as the interstellar medium (ISM). Some interstellar material is gathered into massive clouds that are each referred to as a nebula.

Tiny pieces of solid matter drifting about in the region between stars make up cosmic dust. It's not like the dust you find in your home; instead, it has tiny particles that range in size from collections of just a few molecules to grains that are 0.1 mm in size.

Therefore, an interstellar medium can be made up of cosmic dust as well as ionized, neutral, or molecular hydrogen, hence option C is correct.

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Answer:

D

Explanation:

Answer:

adalah penghijauwan kota

Answer:

 introns are portions of RNA that are cut out and discarded.

Explanation:

In Anaphase of mitosis chromosomes pull away from the middle of the cell.

It is the process by which cell replicates its chromosomes and then segregates them, producing two identical nuclei in preparation for cell division.

It is along DNA molecule with part or all of the genetic material of an organisms.

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Answer:

True

Explanation:

Scientists only use punnet squares if they want to determine what the possible outcomes will be for the offspring.

Hope this helps, if it is wrong, I am sorry. T^T

Answer:

   true

Explanation:

Answer:

a mutation

Explanation:

becaus ethere are diffrent traits wich would be a mutation im in middle school i learned this is 2 so trust me.

Answer:

variation

Explanation:

Any difference between individual organisms or groups of organisms of any species caused either by genetic difference or by the effect of environmental factors is called variation. Variation is observed in physical appearance, metabolism, behavior, learning and mental ability, and other visible characters of an individual.

Your answer is Small Intestine.

Your small intestine makes digestive juice, which mixes with bile and pancreatic juice to complete the breakdown of proteins, carbohydrates, and fats. Bacteria in your small intestine make some of the enzymes you need to digest carbohydrates. Your small intestine moves water from your bloodstream into your GI tract to help break down food. Your small intestine also absorbs water with other nutrients.

Answer: Small intestine

Either you put small intestine in the wrong place, or you're able to put the same one for multiple questions

Answer:

Natural selection is related to the process of evolution because It is one of the processes that drives change and helps to clarify the diversity of life on Earth.

Explanation:

Hope that helps

Answer:

The kangaroo and the beaver both have hair, mammary glands, and long gestation.

Explanation:

Because I had the same question on a test and I failed and see that this was the answer