Why is oxygen important to humans? *

A. It is the only gas in Earth's atmosphere.
B. Our cells require oxygen gas to break down the food we consume and provide the
energy we need to live.
C. It's not important - humans can breathe in multiple gasses for energy.

Answers

Answer 1

Answer:

b is the answer

Explanation:

b is the answer

Answer 2
B is the correct answer- the others don’t make sense

Related Questions

Some salmon have been genetically modified to grow bigger and faster than wild salmon. They are grown in fish-farming facilities. These genetically modified fish should not be introduced into a natural habitat because
A)
the salmon would recycle nutrients at a rapid rate

B)
their rapid growth rate could cause them to outcompete native salmon

C)
they would not have enough oxygen for survival

D)
they would reproduce asexually once they were released

Answers

Answer:

B

Explanation:

Their growth rate would cause them to grow much larger than the native salmon meaning they require more habitat space and sustenance to live. This would drive out the native salmon as they wrestle for food and space.

Compare and contrast inexhaustible and renewable resources. Plz help I’m despreat

Answers

Answer:

Compare and contrast inexhaustible and renewable resources. Inexhaustible resources are sources of energy that will never run out. In contrast, renewable resources could potentially run out. They are finite energy resources that can be replaced in a relatively short period of time.

Explanation:

What would be the most appropriate conclusion for this experiment? I NEED ASAP DUE TODAY!! THANKSSS :D

Answers

Answer:

It is D

Explanation:

It says it was summerized after three weeks.

It is D

Your welcome might as well put a thank you in my profile :)

How do convection currents work?

Answers

Answer:

Convection currents form because a heated fluid expands, becoming less dense. ... As it rises, it pulls cooler fluid down to replace it. This fluid in turn is heated, rises and pulls down more cool fluid. This cycle establishes a circular current that stops only when heat is evenly distributed throughout the fluid.

Explanation:

Convention currents work by forming a heated fluid expanding making it less dense.  As the current rises, it pulls cooler fluid down to replace it.

How do plants weather rocks?
A. When the plants moves water from the roots to the leaves the rock breaks
B. During photosynthesis
C. Plants don’t weather rocks.
D. When roots grow into cracks of rocks and expand the rock breaks.

PLS HELP QUICK!!!

Answers

Answer: D: When roots grow into cracks of rocks and expand the rock breaks.

Which process allows water to enter the atmosphere?
evaporation
condensation
precipitation
freezing

Answers

Answer:

Evaporation allows water to enter the atmosphere.

Explanation:

Answer:

You answer would be A.) Evaporation

Explanation:

Just did the test

Edge2021

Which one of the following is associated with bacterial cells?
Select one:
o
a. Ribosomes
b. Nucleus
c. Lysosomes
d. Mitochondria
e. Smooth endoplasmic reticulum​

Answers

Answer:

a) Ribosomes

Explanation:

Ribosomes are organelles that initiate protein synthesis in cells. Both Eukaryotes and prokaryotes encompass ribosomes with them. However, They are structurally different in Eukaryotes and prokaryotes such as Bacterial Cells.

Which list the levels of organization in order from
smallest to largest?

Answers

The levels, from smallest to largest, are: molecule, cell, tissue, organ, organ system, organism, population, community, ecosystem, biosphere.

Answer:

cell, tissue, organ, organ system, organism

Explanation:

SCIENCE!!!!!!!!!!!!!! =)

what will happen as a result of the cold front coming in contact with a warm front?

Answers

An occluded front occurs which forces the warm air above the cooler air

Answer:

When a cold front overtakes a warm front, it creates what's called an occluded front that forces warm air above a frontal boundary of cooler air masses.

Explanation:

In humans, to fold the tongue is a dominant trait (L), and the straight tongue is the recessive trait. What are the probabilities that the offspring can fold the tongue?

Answers

Explanation:

The given question is incomplete as the genotype of the parents is not given, so the answer is providing in the followings case: 1. dominant parent and recessive parent 2. heterozygous parents Answer: 1. dominant parent and recessive parent: dominant parents can be represented by LL and recessive parent is represented by II, so the gametes would be L, L and I, I. so, LL LI LI LI so there are all offspring in heterozygous condition as we known one or two dominant allele masks the recessive allele for the trait so 100% offspring can fold their tongue. 2. heterozygous parents In this case, parents have LI genotype and gametes would be L and I for each parent so, L I L LL LI I LI I|so there are all offspring in heterozygous condition as we known one or two dominant allele masks the recessive allele for the trait so 100% offspring can fold their tongue. 2. heterozygous parents In this case, parents have LI genotype and gametes would be L and I for each parent so, L I L LL LI I LI I| In this case, one is pure dominant and two heterozygous whereas only one is recessive the phenotype of offspring that cant fol the so, tongue would be: 75% = 3/4

Hurricanes tend to disperse after making landfall because the land is much hotter than the ocean water.

Answers

Answer: False

Explanation:

For a Hurricane to keep going it needs to have hot air constantly going up and cold air coming down. When it gets to land, it loses access to the heat and moisture of the sea which is greater than on land. This forces it to weaken and to eventually dissipate.

Therefore, hurricanes disperse after making landfall because land is not as hot as the ocean water.  

If a muscle contracts isometrically for a long period of time, an EMG (which records the electrical activity in the muscle) recording shows that as the amplitude (frequency of action potential) increases, the contractile force slowly decreases. What is the explanation for this?

Answers

Answer:

During the course of a continuous isometric contraction of given strength, the electrical activity progressively increases. This is due to recruitment of motor units taking place to compensate the decrease in force of contraction occurring in the fatigued muscle fibres.

Explanation:

What is this plz helppppppp

Answers

A nasty insect maybe a tik or something like that
EWWW its an insect. Small holes + insect beware ⚠️

Helpppp me plsss i rlly need it?

Answers

The answer is mitochondria.
i think c is the correct answer

The cell cycle of yeast cells grown in the nutrient-poor environment is approximately what percent of the cell cycle of yeast cells grown in the nutrient-rich environment.

Answers

Answer: 168

Explanation:

The cell cycle of yeast cells grown in the nutrient-poor environment is approximately 168 % of the cell cycle of yeast cells grown in the nutrient-rich environment. Hence option 1 is correct.

What is cell cycle?

Cell cycle is defined as the cascade of cellular activities that lead to cell division into two daughter cells. The primary purpose of the cell cycle is to accurately divide the enormous amount of DNA found in the chromosomes into two daughter cells that are genetically identical. A cell spends the majority of its time in what is known as interphase, where it develops, duplicates its chromosomes, and gets ready to divide.

The interphase and M-phase are the two phases that make up the cell cycle. About 90% of the cycle is made up of interphase, during which the cell develops and copies its chromosomes in order to divide. Undifferentiated ESCs have a G1 and S cell cycle percentage of 15-20% and 60–70%, respectively, however as the ESCs differentiate, this ratio changes.

Thus, the cell cycle of yeast cells grown in the nutrient-poor environment is approximately 168 % of the cell cycle of yeast cells grown in the nutrient-rich environment. Hence option 1 is correct.

To learn more about cell cycle, refer to the link below:

https://brainly.com/question/15876101

#SPJ2

Two species of meadowlarks have different mating calls that lead to reproductive isolation. What type of isolation does this example represent?
A.
mechanical
B.
behavioral
C.
temporal
D.
gametic

Answers

answer : C
Because according to google behaviors

Answer:

B. behavioral

Explanation:

plato

A human blood cell is placed in fresh water. As a result, water moves _____ the cell

Answers

Answer:

inside

Explanation:

osmosis is where water moves from high water conservation(outside of the cell) to a low water concentration(inside the cell) through the memebrane.

Answer:

the blood cell will burst in fresh water

Explanation:

Infectious diseases are caused by?

A.Pathogens
B.vaccines
C.Antibodies
D.Minerals ​

Answers

Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies.

What theory states that the continents were once joined together and moved apart over time?
A. Theory of Convection Currents
B. Theory of Continental Drift
C. Theory of Plate Tectonics
D. Theory of Seafloor Spreading

Answers

Answer:

theory of continental drift

A major influence on climate is?

Answers

Answer:

that's very broad, is that the whole question?

Answer:

A major influenece is the wide and used fossil fuels

If someone adds thousands of small fish to a lake, how would the number of big fish
change?

Answers

Answer:

The number of large fish will increase.

Explanation:

According to the cell theory, which of the following best describes the role of cells in living organisms?

A:Cells are the basic building blocks of all living organisms.

B:Cells make up the tissues that are present in all forms of life.

C:Cells are produced spontaneously when living organisms need them.

D:Cells contain the same specialized organelles required for life in both prokaryotic and eukaryotic organisms.

Answers

Answer:

D

Explanation:

Valence electrons=____

Answers

Explanation:

not sure if you are wanting the definition of Valance electrons, but if you are a simple explanation woulf be, "an outer shell electron that is associated with an atom, that can participate in the formation of a chemical bond".

Answer:

the electrons located in the outer shell of an atom that can take part in chemical reaction also are known as valence electrons in simple form .

hope this helped you .

photosynthesis is an example of...

an exothermic reaction

an endothermic reaction

a reaction that gives off heat

a reaction that emits energy

Answers

Answer:

Endothermic reaction

Explanation:

Photosynthesis is an endothermic reaction because sunlight is being absorbed during the reaction and the definition suggests that in a reaction if heat is being absorbed it is termed as an endothermic reaction.

what type of pigment is located in the membrane of the thylakoid

Answers

Answer:

The green pigment chlorophyll is located within the thylakoid membrane, and the space between the thylakoid and the chloroplast membranes is called the stroma.

Explanation:

Answer:

green pigment chlorophyll

Explanation:

the green pigment chlorophyll is located within the Thylakoid membrane, and the space between the thylakiod the and chloroplast membranes is called the storma

5. How are Stages 1 and 4 of demographic transition model above similar?

Answers

Answer:

They ain't similar in any way but are entirely opposite to each other because the stage 1 has a high rate of birth and death while the stage 4 has a low rate of birth and death

Curly hair (C) is dominant to straight hair (c). What must the genotype of the parents be to produce CC Cc CC Cc

Answers

Answer:

Expected frequency of CC genotype:      

✔ 0.01

Expected frequency of Cc genotype:            

✔ 0.18

Expected frequency of cc genotype:            

✔ 0.81

Explanation:

Which is the correct chemical equation for photosynthesis?
O 6CO2 + 6H20 ® C6H12O6 + 602
O C6H12O6 + 602® 6CO2 + 6H20
O 3C02 + 3H20 + 302® C6H1206
O 602 + 6H20 ® C6H12O6 + 6CO2

Answers

Answer:

its the first one 6CO2 + 6H20 ===> C6H12O6 + 602

Explanation:

The correct chemical equation for photosynthesis is shown below:

6CO₂ + 6H₂0 ===> C₆H₁₂O₆ + 60₂

What is Photosynthesis?

Thus is the process in which green plants manufacture food in the presence of sunlight.

It makes use of materials which can be seen in the balanced equation shown above thereby making option A the most appropriate choice.

Read more about Photosynthesis here https://brainly.com/question/19160081

Conclusions
Base your answers to questions I to 3 on the diagram below, which illustrates a cross section
of subsurface rocks.
1. Which rock type is the youngest?
(a) A
(b) B
(c) C
(d) D
2. What was the last process to occur?
(a) The igneous intrusion of C
(b) The deposition of layer A
(c) The tilting of rock layers A and D
(d) The deposition of layer B
Prentice Hall, Inc
Laboratory Manual
221
search
O
BI
N

Answers

A) C)
Sry if I’m wrong

Pls help me ASAP Plsssssssssssddd

Answers

Answer:

Older rock layers are found under younger rock layers

Explanation:

It directly states in the sentence above the diagram that the bottom layer of rock is the oldest.

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