Please help me with 8th grade science

Answer:

Its ribose and phosphae

Explanation:

Answer:

For organization

Scientise classify things to ogrnaize and to show the diversity of different groups of things

For example classifying organisms and elements

Hope this helps

Answer:

b. False​

Explanation:

Preservation stands for preserving or sustaining what already exists.  aimed at preserving natural resources in their original environment, free from human interference. It stands for securing an object from harm or decay while preserving its nature or state at the same time. Preservation of natural resources does not only benefit humans but also rejuvenates the wildlife and thus gave time for the Earth to breathe and regain its natural form.

The answer to the question is A

Answer:

cell division

protein synthesis

growth and metabolism

Explanation:

idk if this is right I just looked it up

Answer:

water is is a compound substance

Answer:

pros;reliable,consistency,easy storage cons;unsafe,unhealthy,polluting

Explanation:science

Answer:

secondary structure

Explanation:

primary structure

Answer:

They use spears.

Explanation:

The hunting method that the Clovis people used for killing the large animals is the use of spears. These spears have a pointed head which easily penetrate in the body of these large animals and kill them in a very less time. They mostly hunt big animals in groups which make easier the hunting of animals. In this period when the Clovis people were present, extinction of mammoths, giant sloth and bison in North America occurs due to hunting and climate change.

Answer:

They used spears to kill a bunch of animals :3

Explanation:

Answer: Options A, B and C.

Use feedstocks that convert most/all of the plant to energy, not just kernels, Change the public view on biofuels??,

Be able to scale production up in an economical way

Use microbes to make oil?

Explanation:

In order for biofuels to become viable option the industry need to Use feedstocks that convert most/all of the plant to energy, not just kernels, Change the public view on biofuels, Be able to scale production up in an economical way, and Use microbes to make oil because biofuels are fuels produced from organic matter or living matter such as plant material and animal wastes which is use for transportation majorly.

In order for biofuel to become viable options, there should be increase in production in a way that is affordable,cheap and safe, use feedstocks that convert plants and animals remains since plants and animal remains are used for it's production and also some microbes are of economic importance's that help to breakdown or decompose plants and animals remains to make oil which is called biodesel use for transportation.

Answer:

Carbon is the only element that can form so many different compounds because each carbon atom can form four chemical bonds to other atoms, and because the carbon atom is just the right, small size to fit in comfortably as parts of very large molecules. Having the atomic number 6, every carbon atom has a total of six electrons.

Explanation:

Answer:

D.) Weight

Explanation:

A person's weight can differ on other planets like mars a person wheighing 150lb will weigh 130 on mars.

Answer and Explanation:

The scientific method is a research method used to produce knowledge. It consists of systematic observations, measures, experimentation, analysis, and verification of a hypothesis. It is based on two aspects: reproducibility (the capability of reproducing the experiment in any other place by any researcher) and refutability (susceptibility to be refused).

There are different steps to follow in a scientific method:

• Definition and problem statement. The question for which there is not an answer yet.

• Hypothesis formulation.  

• Data collection and analysis. This step involves testing the observations.

• Results

• Verification of the hypothesis. This step involves the acceptance or rejection of the working hypothesis.

• Conclusions and Discussion.  

In the exposed example:

Let us imagine that the scientist only wants to evaluate the performance of the new adhesive connecting only two previously determined metals: Metal A and metal B. Let us also assume that there is only one exhisting adhesive, apart from the new one that is being tested. Finally, we might also assume that he has already done bibliographic research to know better about the requirements for adhering metals and the properties of the adhesive material needed to do so. The problem might have been related to the need of getting a better adhesive.  

The scientist did not perform the experiment with the existing adhesive. The scientist did not compare the performance of the previously existing adhesive to the new one.

The scientist should have performed the experiment with two treatment groups:

The scientist also should have repeated the treatment at least two or three times for each group.

Finally, the scientist should have compared results between the performance of the two adhesives before reporting them.

Answer:

the answer is 8%

Answer:

c. sugar, ATP

Explanation:

C 6 H 12 O 6 + 6 O 2 --> 6 CO 2 + 6 H 2 O + ATP

basically glucose and oxygen undergo a combustion reaction among other things which will go on to produce ATP. So oxygen plus glucose or sugar produces when "burned" within a mitochondria = ATP.

Answer: the equator would be warmer than the poles

Explanation: just took it and got it right, cheers!

The effect of the uneven distribution of the Sun's energy on Earth is that the equator would be warmer than the poles.

The uneven distribution of the sun may be defined as the amount of sunlight that is not received equally all over the Earth's surface. This causes a fluctuation in temperature.

When there will be the Sun, the temperature of that region must be slightly higher as compared to the other region. The movement of the sun usually happens throughout the tropical regions only i.e. from the tropic of cancer to the tropic of Capricorn.

Therefore, the effect of the uneven distribution of the Sun's energy on Earth is that the equator would be warmer than the poles.

To learn more about the Sun's movement, refer to the link:

https://brainly.com/question/1049261

Answer:Chromosome

Explanation:

Mitochondria are basically power generators, thats it.

Vacuole acts as a sewage system, dumping excess water and material.

A chromosome is something that makes up a gene, so that cant possibly be right.

Answer:

mitochondrion

Explanation:

The mitochondrion contains mitochondrial DNA which goes back to the  endosymbiotic theory  if you remember that.

Answer: 8 grams

Explanation: 2 grams of water added with 6 grams of powder equals 8 grams.

Answer:

Choosing protein as macromolecule.

Explanation:

The given environmental changes can lead to structural changes in protein as well:

pH - Several amino acids contain sidechains with practical gatherings that can promptly pick up or lose a proton. Changes in pH would prompt an adjustment in the charge of the amino acids, prompting charge-charge attraction or repilsion between non-interfacing amino parts.  

Temperature - High temperatures can prompt protein denaturation. Warmth can upset hydrogen bonding and hydrophobic interactions.  

Reduction or oxidation Environment - Some tertiary structure of protein folding is held by disulfide linkages. Reducing agent will lead to unfolding by introducing itself to break disulfide bonds.

Effect of these change: Sequence of amino acid and structure of protein molecule form determines function, any slight change to a protein's structure may result in the protein to become dysfunctional or produce different product.

Answer:

Blood vessels which help the body carry red blood cells throughout the bodies functions.

Explanation:

Capillaries, the smallest and most numerous of the blood vessels, form the connection between the vessels that carry blood away from the heart (arteries) and the vessels that return blood to the heart (veins). The primary function of capillaries is the exchange of materials between the blood and tissue cells.

Answer:

Albumin provides the body with the protein needed to both maintain growth and repair tissues. It can also help with fluid removal during the dialysis treatment. If your albumin level is good, fluid will move more easily from swollen tissues into the blood, where it can then be removed by the dialyzer.

Due to the large size, the albumin does not get diffuse into the dialysate.  

• The size of albumin is too large for the dialysate due to which it does not get diffuse through it.  

• The main objective of dialysate is to withdraw toxins from the blood by the phenomenon of diffusion.  

• The membrane via which the toxins passes are small in size, therefore, only small molecules possesses the tendency to diffuse through it and due to albumin's large size it does not get diffuse through it.  

Thus, because of large size, the diffusion of albumin through the dialysate does not take place.  

To know more about:

https://brainly.com/question/25449147

The correct answer is -Use all the data that was truly observed, not partial data that is expected or desired, skewing results.

Explanation:

In general, all practices and research should be guided by moral and ethical principles, which guarantees the research and practices are objective and participants are not harmed. In this context, an example of these principles is "Use all the data that was truly observed..." because it is ethically and morally correct to report the data that was found in the experiment or research and avoid modifying it based on financial interests, expectations, desires, etc. Also, this principle makes the research or practice objective.

Answer:

allows giant panda to dig in the mountain forests to hide its food

Explanation:

C2H5OH+02=CO2+H2O

Balanced equation

Answer and Explanation:

Available Data:

1) Find the gross productivity of the sugar beets.

We need to calculate the GPP, which equals NPP - Respiration rate. The respiration loss is 25% of the NPP. This is:

100% NPP--------------- 120 g/m²/day

25% NPP ----------------X = (25 x 120)/100 = 30 g/m²/day

Now that we know the values of NPP and respiration rate, we can calculate the GPP.

GPP = NPP - Respiration

GPP = 120 (g/m²/day) - 30 (g/m²/day)

GPP = 90 g/m²/day

GPP = 0.009 g/cm²/day

2) Using the NPP, calculate the efficiency of photosynthesis for the sugar beets.

% Efficiency of Photosynthesis = (NPP/Insolation Energy) X 100

We know the NPP, but this value is calculated in g/m²/day, while the Insolation energy is in g/cm²/day. We need to calculate the % Efficiency of Photosynthesis in cm. To do that, we must transform the information.

So if 1 m² = 10,000 cm², then:

10,000cm²----------120 grams/m²/day NPP

1 cm²---------------- (1 x 120) / 10,000 = 0.012 grams/cm²/day NPP

We also know that 1 gr beets = 2,000 cal, and that the Insolation energy is 800 calories/cm²/day

So we need to transform Insolation energy from calories/cm²/day to grams/cm²/day, so:

2,000 calories ----------------- 1 gr beet

800 calories/cm²/day---------X = 0.4 gr beet.

% Efficiency of Photosynthesis = (NPP/Insolation Energy) X 100

% Efficiency of Photosynthesis = (0.012 (gr/cm2/day) /0.4 (gr/cm2/day)) X 100

% Efficiency of Photosynthesis = 3 gr/cm2/day  

Answer:

They can be single or multicellular and they are bigger than prokaryotes. They have a distinct nucleus and membrane-bound organelles, so that option would be incorrect. I hope this helped.

Explanation:

Answer:

they said to think visually

Explanation:

I hope this helps