this is about environmental systems ​

la verdad no se la repuesta si me la hubiera sabido si te la hubiera dicho

You didn't put up the question for me to answer. You put the choices to choose from, but no question.

I disagree because although recycling is good, Earth firstly is not a closed system and new matter enters the environment all the time, such as comets.

In terms of matter, the Earth is often referred to as a closed system. In other words, the total amount of matter on Earth neither changes nor becomes more or less; Instead, it can take on different forms due to different processes.  So, I am agree with this statement.

Although the Sun provides the world with continuous energy, most of the actual matter on Earth is recycled and used in various cycles. Recycling of waste is important because it enables us to recover useful materials and resources, reducing the need for mining new raw materials from the earth. Recycling helps us to reduce the environmental damage caused by the extraction and disposal of waste as well as the depletion of natural resources. It helps maintain long-term equilibrium inside a closed system of matter on Earth.

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Answer:

Vitamin A

Explanation:

Vitamin helps corrects deficiency and  improve night blindness.

Answer:

Cell cycle consists of interphase and mitosis. During interphase there are 3 phases- G1, S and G2 phases. G1 is the resting phase after previous mitotic phase, S phase is DNA synthesis phase and G2 phase is again resting phase.

DNA synthesis occurs before mitotic phase which is the actual cell division phase and chromosomes are condensed during mitotic phase therefore it's in the chromatin form that DNA is synthesised.

Explanation:

Have a great day!

In the same way, cells during development also express specific sets of genes. These patterns of gene expression cause cells to communicate with neighboring cells, resulting in coordinated development into a multicellular organism.

Answer:

The answer is B.) Geothermal

Answer:

Sandatone-1

Igneous Rocks-4

Shale-2

Limestone-3

Explanation:

Answer:

A petroleum reservoir or oil and gas reservoir is a subsurface accumulation of hydrocarbons contained in porous or fractured rock formations. Such reservoirs form when kerogen (ancient plant matter) is created in surrounding rock by the presence of high heat and pressure in the Earth's crust.

Explanation:

Answer:

it is the oil. we want to mine from soil

Answer: 4.

Explanation:

This happened due to the low air pressure in the highest areas of Colorado, which made hard the intake of air.

Air pressure is fewer as the elevation in an area increases. In other words, the air over us is less, so the pressure that it makes is lower.

Miss Westbrook's heart rate and breathing sped up due to the low air pressure that she experimented with when ascending or when skiing in Aspen, which is very elevated. As the pressure is lower, not much air can enter the lungs, so her brain increases the breath rate to obtain the same amount of oxygen that her body had when breathing normally on the Bay. As there is not enough oxygen in her body, the brain also increases the heart rate to match the rhythm of the breath and deliver the scarce oxygen to the different parts of the body.

In conclusion, the increase in the heart and breath rate happens due to the low air pressure in elevated areas that makes our body find ways to compensate for the decrease in the amount of oxygen that our body can take.

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Answer:

covalent bonds.

Explanation:

Covalent bonds happen when two atoms - in this case, hydrogen and oxygen - share electrons with each other.

Answer:

covalent bonds

Explanation:

duh

Answer:

The receptor protein that is embedded in the cellular membrane must accept the signal.

Explanation:

When it receives the signal this protein will then go through a conformational change. This will change the shape and how it interacts with the molecules around it. Different receptor protein will act in different ways.

Answer:

As their name implies, GPCRs interact with G proteins in the plasma membrane. When an external signaling molecule binds to a GPCR, it causes a conformational change in the GPCR. This change then triggers the interaction between the GPCR and a nearby G protein.

What happens to the membrane protein (gray) when it is activated by the signal molecules?

The membrane protein interacts with the nearby GPCR.

Answer: the answer is oral consumption

Compared to other routes of administration, oral consumption is the most complicated way for a drug to enter the bloodstream.

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Ella requires 3905 kJ of energy to do 2 hours of dancing a week, 1 hour of football a week, and 0.5 hours of swimming a week.

Ella, with a mass of 55 kg, does a series of activities in a week.

Let's calculate how much energy she needs for each activity in total.

Ellas does 2 hours of dancing a week, which consumes 18 kJ/kg.h.

2 h × 55 kg × 18 kJ/kg.h =  1980 kJ

Ella plays 1 hour of football a week, which consumes 25 kJ/kg.h.

1 h × 55 kg × 25 kJ/kg.h =  1375 kJ

Ella goes swimming for 0.5 hours a week, which consumes 20 kJ/kg.h.

0.5 h × 55 kg × 20 kJ/kg.h =  550 kJ

E = 1980 kJ + 1375 kJ + 550 kJ = 3905 kJ

Ella requires 3905 kJ of energy to do 2 hours of dancing a week, 1 hour of football a week, and 0.5 hours of swimming a week.

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Answer:

False

Explanation:

-Carbon has 4 electrons in its outer shell

-It can achieve a full outer shell by forming Covalent Bonds

Option D has the highest concentration of lactic acid in the student's muscle tissue.

We can arrive at this answer because:

As we can see in the information presented above, option D shows the performance of flexions with more intensity and for a longer period, which justifies a greater accumulation of lactic acid in the muscle.

It is important to remember that the accumulation of lactic acid in the muscle is a negative situation and that it can cause muscle pain and fatigue.

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Answer:

Explanation:

Answer: One part of the plants vascular system is its stem which contains vascular tissues, giving it the strength to stand up, while also conducting water a nutrients to and from the roots, to the leaves.

Explanation:

Answer:

vascular system, in plants, assemblage of conducting tissues and associated supportive fibres. Xylem tissue transports water and dissolved minerals to the leaves, and phloem tissue conducts food from the leaves to all parts of the plant.

I just search this sorry if its wrong :)

Answer:

D) How many valence electrons the atom contains.

Explanation:

This is the only closest one

because the number of electrons in the outermost shell is the correct answer

Answer:

So three of the offspring will be red, blue and purple and one will be purple.

hope that's correct and it helps

This question is in accordance with the mendel law of independent assortment which stated that two alleles assort independently during gamete formation. Therefore, the resultant punnett square will show flower having the genotype of RB and purple color as its phenotype.  See Attachment for punnet square results.

Answer:

Self-replicating organelles made up of nine bundles of microtubules and are found only in animal cells. They appear to help in organizing cell division, but aren't essential to the process. * always found together and near the nucleus. Like a bundle of straws

Explanation:

Answer: Make laws.

Declare war.

Raise and provide public money and oversee its proper expenditure.

Impeach and try federal officers.

Approve presidential appointments.

Approve treaties negotiated by the executive branch.

Oversight and investigations.

Explanation: Thats all of their powers just choose 3!!

Answer:

It is the iris that determines eye color.

Explanation:

A person's eye color results from pigmentation of a structure called the iris, which surrounds the black hole in the center of the eye, the pupil. It helps control how much light can enter the eye. The color of the iris can obviously range from blue, green, brown and I think grey too if fiction books can be trusted lol

The letter N in the most common elements for life CHONP indicates (B) Nitrogen.

Elements are the smallest unit that cannot be broken down further. Each element comprises of specific protons, neutrons and electrons. These elements are essential for living organisms as well. The most common elements inside living body are: CHONP, i.e., Carbon, Hydrogen, Oxygen, Nitrogen and Phosphorus.

Nitrogen is the element in the periodic table with an atomic number 7. It is a very essential element in living organisms because it acts as an important constituent of compounds like nucleic acids, amino acids, proteins, etc. In plants it is a part of chlorophyll.

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Answer:

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Because they have a wide surface area to speed up absorption, root hair cells are designed to absorb water and mineral ions.

Plants are anchored by root hairs that emerge from the surface of the soil and take up water and minerals.

Vascular tissue in the heart of the root transports food produced in the leaves to the root, while transporting water and minerals away from it.

Its main purposes include anchoring the plant, absorbing water and dissolved minerals and transferring them to the stem, as well as storing reserve food.

Water and nutrients are mostly taken up by root hairs from the rhizosphere.

Therefore, root hair cell have large surface area that enable the cell to carry out its function.

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