Chemistry Middle School

yo pls help All organisms have a barrier that separates their internal environment from the outside world. Which of the following organ systems forms a barrier between the internal and external environments for humans? A. integumentary system B. circulatory system C. nervous system D. excretory system

Answers

Answer 1

Answer:

c

Explanation:

Answer 2

Answer:

That would be the Integumentary system.

Explanation:

The integumentary system is the system of the body that produces hair, skin, etc.

Related Questions

Help me with this, please. Thanks

Answers

Answer ———hardness ...........
The correct answer is hardness hopes this helps

Write an explanation of the relationship between genes, proteins, and traits for the Blue Lobster.

You may think of a lobster as red, but about 1 in every 2 million lobsters is blue! This blue color is the result of a mutation in the lobster’s genes. The mutation causes the lobster to make an extra amount of a protein called astaxanthin. This protein is usually important for the red color that you see when the lobster is cooked, but in excess amount, makes the lobster blue.

Answers

Answer: The lobster's blue coloration is a result of a genetic defect that causes the lobster to produce more of a certain protein than normal.

NOOOOO LINKKKKSSSWhat biome do we live in?
A. Tropical forests
B. Temperate forests
C. Grasslands
D. Mountains
E. Oceans
F. Wetlands

Srry bout the last one

Answers

Answer:

it depends where you live really... lol

A tropical forests you know the vibes

On the following periodic table of elements, what do these colors represent?

blue - -Nonmetals
red- -Metals
yellow- -Metalloids

Answers

Answer:

blues are nonmetals (gas)

yellows are metalloids (liquids)

reds are metals (solids)

Explanation:

good luck, hope this helped <3

nonmetals are gas metalloids are liquids and metals are solid

What kind of chemical reaction occurs when fossil fuels and biomass are burned? What is produced in addition to energy?

please answer the second part of the question asking, "What is produced in addition to energy?"

Answers

Carbon dioxide is produced

CAN SOMEONE PLEASEE HELPPP
Samira watched a demonstration in which a scientist combined two substances in a sealed container and analyzed the results. The ending substances did not look the same as the starting substances.

Samira was given a diagram with the repeating groups of atoms that make up the starting substances, plus information about the properties of the starting and ending substances. She created a model of the repeating groups of atoms that might make up the two ending substances.

A.) Does her model correctly show why the properties of the ending substances are different from the properties of the starting substances?

B.) Describe what could be correct or incorrect about her model

Look at the diagram below then write your answer to question 13 part "A" and "B".
THIS IS NOT A MULTIPLE CHOICE QUESTIONS YOU NEED TO ANSWER BOTH QUESTIONS
thanks

Answers

Answer:

hope its not to late..............Samira's model correctly demonstrates how the properties changed with the rearrangement of the atoms. However not all atoms are accounted for. There is a missing reactant. Samira's model correctly demonstrated how the atoms in two compounds reacted to form two new products. However, the elements present in the reactants side should be the elements that make up the new products in the product side. But as the diagram shows, Sameera has mistakenly added a new element to one of her products which will be wrong.

Explanation:

According to this climate graph, which month is the average temperature the lowest in Santa Cruz?



January


March


May


July

Answers

Answer:

january

Explanation:

I’d say the answer is january

What two enzymes are used during replication and what does each do?

Answers

Answer:

The two enzymes that are used during DNA replication is helicase and polymerase. Each enzyme has distinct role that made it a vital part of the replication. In the course of DNA replication, the initial stage is to unzip the double helix structure of the DNA molecule by the enzyme helicase, which breaks the hydrogen bonds that holds the complementary bases of DNA.

Moreover, the DNA polymerase has the ability to exactly copy a DNA template. This enzyme binds to the leading strand and then adding a new complementary nucleotide bases to the DNA strand. In addition, it catalyzes the joining of deoxyribonucleoside 5′-triphosphates (dNTPs) to form the increasing DNA chain.

Explanation:

helicase and polymerase

5-8 complete sentences paragraph, explaining why you would want to make a change to help our ecosystems. (including a change you think would help our ecosystems)

Answers

Global warming affects many processes in biological ecosystems. Different species of flora and fauna change their habitats and geographical areas according to climate change and specific geographical environments. Areas of occurrence of specific species, for example insects in terrestrial areas and fish and arthropods in the seas and oceans, change. Bird habitats change, so migrations of some bird species may also be subject to modification. In the situation when forest areas dry out and turn into steppes and deserts, changes in natural habitats and areas of occurrence of species change and concern simultaneously many species of flora and fauna.

write a sentence that describes how the flow of liquid with low viscosity differs from the flow of a liquid with high viscosity

Answers

[] Hello ! []

Answer:

Fluids with low viscosity have a low resistance and shear easily and the molecules flow quickly; high viscosity fluids move sluggishly and resist deformation. Some liquids, like pitch, glass and peanut butter, have such high viscosity they behave like solids.

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I hope this helped! Brainliest appreciated :D

⊕If this answer is wrong or displeases you, please tell me in the comments I would like to know.⊕

Thank you have a wonderful and blessed day!

-- Juri Davis

Answer:

Fluids with low viscosity have a low resistance and shear easily and the molecules flow quickly; high viscosity fluids move sluggishly and resist deformation. Some liquids, like pitch, glass and peanut butter, have such high viscosity they behave like solids.

Explanation:

Describe the change that you made that led to the decrease in the size of the greenleaf population. Explain why the change led to a decrease in the greenleaf population size.
(no science option again)

Answers

Answer:

DO YOU STILL NEED HELP?

Explanation:

Less water and worse weather for photosynthesis will make the leaves not turn out green and somethings with sunlight
Other Questions
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