Answer:
Image result for True or false are sun is now the main sequence of its life cycle
The Main Sequence:
The Sun, like most stars in the Universe, is on the main sequence stage of its life, during which nuclear fusion reactions in its core fuse hydrogen into helium. ... For the Sun, this process began 4.57 billion years ago, and it has been generating energy this way every since.
Explanation:
- Eijiro <3
PLEASE HELP ME
The greater the biodiversity in an ecosystem the
A. less likely the ecosystem is to survive
B. more likely the ecosystem will survive
C. less valuable it is to human, for various products
D. the more similar it is
Answer:
I am pretty sure the answer is B
- I'm sorry of its not correct
Can someone help me with question 1 pls:)
answer:
c d e
good luck :)
hopefully, this helps
have a great day !!
The mass and______of an object affects the momentum of its motion.
a. destiny
b. shape
c. velocity
d. volume
the diagram shown above illustrates the---- cycle.
What do organisms get when Glucose is broken down?
Answer:
They get energy
Your friend claims that all mutations are harmful to living things. Do you agree or disagree with this claim? Support your position with:
a description of a genetic mutation and
a scientific explanation of how a mutation may affect an organism such as a tomato, spinach, or strawberry plant.
Answer:
Explanation:
yes
Answer:
Answer:
Increased Bone Density found in humans which makes the human body stronger, as well as strenthening defense.
Mutations may affect tomatoes my increasing water retention
Explanation:
Explanation:
The discovery that chromosomes are involved in inheritance was made possible by the invention of the -
O a. computer
O b. microscope
Oc microgram scale
O d. mercury thermometer
What effect does burning fossil fuels during manufacturing and energy production have on outdoor air pollution?
Answer:
It causes global warming as well as air pollution.
Explanation:
Burning of fossil fuels has adverse effect on outdoor air pollution because when the fossil fuels burns carbondioxide gas is released in the atmosphere. Carbondioxide gas is a greenhouse gas which is released in the atmosphere through burning of fossil fuels and is responsible for increasing air pollution. This increase in carbondioxide gas leads to global warming due to blockage of solar radiation that is reflected from the earth surface.
reactions of photosynthesis
State why parthenogenesis is considered a form of asexual reproduction
Answer:
Parthenogenesis is an asexual mode of reproduction, in which, an unfertilized egg develops into a new individual, occurring commonly among insects and certain other arthropods. form of asexual reproduction found in females, where growth and development of embryos occurs without fertilization by a male.
Explanation:
why are enhinoderms and cnidarians are more closely related than enchinoderms and mammals
Answer:
Because they are triploblastic ( Triblastica ).
Explanation:
Their body is composed of endoderm, mesoderm and ectoderm. While Cnidaria are Diblastica, so they are composed only from two layers: endoderm and ectoderm.
In addition larvae of Echinoderms are bilaterally symmetrical and they become nearly-radial only as adults.
A teacher performs a demonstration of cellular transport by placing a raisin in pure water. After 24 hours, the students check the raisin and find that it has swollen and has a greater mass than before it was placed in the water.
Answer:
Explanation: it will swell after 24 hrs
List some biotic and abiotic factors you would expect to find in a city park?
If too many pandas are competing for bamboo (their food), what could happen?
there will always be enough for them to share
eventually there will no be enough bamboo for all
bamboo will keep growing back
Answer:
Eventually, there will no be enough bamboo for all
Explanation:
Answer B. Eventually, there will not enough bamboo for all.
Explanation:
What will happen to the red blood cell in this environment?
Group of answer choices
The red blood cell will swell from absorbing salt molecules.
The size of the red blood cell will remain constant.
The red blood cell will swell at first and then shrink.
The red blood cell will shrink from losing water molecules.
Answer:
Explanation:
A The size of the red blood cell will remain constant. B The red blood cell will swell at first and then shrink.
The red blood cell in this environment is the red blood cell will swell from absorbing salt molecules. Thus, option A is correct.
What is the salt concentration of red blood cell?The red blood cell has a lower salt concentration than the liquid which means that it has a higher water concentration than the liquid. By the process of osmosis, water will flow from the red blood cell to the liquid which would lead to the red blood cell shrinking in size.
Cellular respiration has used to create energy for cells. It works by burning glucose in the presence of oxygen. The result is an outburst of energy and [tex]CO2[/tex] as well as water. Red blood cells that are bathed in blood neither shrink nor swell and burst because the concentration of the surrounding blood is equal to the concentration inside the cytoplasm of the red blood cells. This means that the two solutions are isotonic.
Therefore, The red blood cell in this environment is the red blood cell will swell from absorbing salt molecules. Thus, option A is correct.
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HOW AND WHY HAS THE SEA-TURTLE CHANGE?
Some students conduct an investigation in a biology lab by setting up four different artificial stomachs, each in a
40 °C water bath. The students place the same amount of boiled egg white, a protein-rich source, in each stomach.
They also add dilute hydrochloric acid, HCl, and pepsin, a digestive enzyme, to each stomach, as shown in the table.
The students observe the mass of egg white in each stomach every 15 minutes.
Which statement describes the most likely result of this investigation?
A. The mass of the Egg white increases as the volume of the enzyme increases.
B. The egg white is unaffected by the differing amount of enzyme.
C. Digestion decreases in each stomach as more of the egg white's surface area becomes exposed.
D. Digestion increases as the volume of the enzyme increases.
Answer: D. Digestion increases as the volume of the enzyme increases.
Explanation:
Enzymes speed up reactions by reducing the activation time of a reaction. If there are more enzymes therefore, the reaction will move faster.
Pepsin is an enzyme that prefers acidic conditions so it can work with dilute HCL. It can also work in temperatures of 40 °C without getting denatured. As more Pepsin is added therefore, the reaction will move faster and digestion will increase.
Answer: The answer would be D!!
Explanation:
Use these when yall break up.
“the facts i convinced my friends you were attractive-“
“i lowered my standards for you and this is how you treat me?”
“yk im startin to understand why my friends laughed when i showed them you”
girllllll your gonna leave that man im tears !!!!!
I will remember these when I will not be single (Single life sucks)
Use the data table to complete the question
Visible light occurs along a continuum of different wavelengths. The datatable shows the wavelength in nanometers of four colors of visible light
Which color has the HIGHEST FREQUENCY?
Wavelength of Colors of Visible
Light In a Vacuum
Color Wavelength
(nanometers)
Red
700
Orange-Yellow
600
Green-Blue
500
Violet
400
A.Blue-Green
B.Red
C.Orange-Yellow
D.Violet
Answer:
A.Blue-Green
may be right answer
-_-
Pls help! Explain why blood pressure must decrease in the arterioles before entering the capillaries ahhhhh
this is because the blood flow slow through the capillaries to allow gaseous exchange. Plus the pressure is higher in capillaries because the diameter of the capillaries is smaller than arterioles
Which two body systems are interacting in the diagram?
Answer:
Where is the diagram pls?
What is the molar mass of the following compound: Ca5(PO3)3
Answer:
454.3132 g/mol
Explanation:
..
Draw a flowchart to illustrate how a change in a nucleotide in a DNA strand leads to symptoms experienced by those with sickle cell anemia.
Answer:
Explanation:
The Flowchart is in the picture below. I hope it would be helpful for you.
A nucleotide is a compound containing three component units namely a pentose sugar, a heterocyclic nitrogenous base and a phosphate group. The nitrogenous base present may be either purines or pyrimidine.
What is sickle cell anemia?The sickle cell anemia is one of a group of inherited disorders known as the sickle cell disease. It affects the shape of the red blood cells which carry oxygen to all parts of the body. In sickle cell anemia some red blood cells are sickle shaped.
Red blood cells are usually round and flexible, so that they move easily through blood vessels. The sickle shaped red blood cells are also called crescent moons. These sickle cells also become rigid and sticky which slow or block the blood flow.
SCD causes a basal substitution of adenine A to thymine T in the sixth codon of beta globin. This leads to the replacement of glutamic acid with valine in polypeptide chains of haemoglobin.
The flowchart is given below:
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What should be the goals of managing forests?
The ____________________ is the reproductive structure of gymnosperms.
Answer:
seed cones and pollen cones
Explanation:
In gymnosperms, their reproductive structures include the pollen cones, which produce pollen grains or the male gametophyte; and the seed cones, which produce female gametophyte.
Answer:
The Answer Is "Cones"
Explanation:
Why? Well, the cones spread from the male cones to the female cones... Then, the female cones put this sticky stuff on the cone called, " Ovule" Finally, it creates the cycle once again.
Also, have a mythical day!!!
Where are chromosomes found in a cell?
Answer:
Chromosomes are thread-like structures located inside the nucleus of animal and plant cells. Each chromosome is made of protein and a single molecule of deoxyribonucleic acid (DNA).
Explanation:
In guinea pigs, the allele for short hair (S) is dominant over long hair (s). If two heterozygous short-haired guinea pigs mate, what percentage of their offspring will have long hair?
Answer:
75% long hair
Explanation:
If you use a table and put Ss for one parent on top and Ss one the side for the other parent you get the result of SS Ss Ss ss which means 75% long hair.
a particle of oxygen has 8 protons and 8 electrons. is this an atom or an ion? what's the charge?
Answer: It is Atom and the charge would be postive.
Explanation: If the atom had 8 protons and 8 electrons (oxygen for example), knocking one of the electrons out, makes 8 protons and 7 electrons. The atom now has a net charge of +1 because the 7 electrons cancil the positive charges of 7 of the protons in the nucleus, but there is one remaining proton with a positive charge.Oxygen's 8 electrons are negatively charged, and they orbit the atomic nucleus and balance the positive charge of the 8 protons. The positive charge of 1 proton exactly cancels the negative charge of 1 electron. Answer 9: Oxygen is atomic number 8 on the periodic table, which means it has 8 protons!
Hope this helps :) Can u plz mark me branliest :)
A particle of oxygen has 8 protons and 8 electrons in an atom and the charge on it is zero.
What is an atom?It is the smallest particle of matter composed of electrons and a nucleus of protons and neutrons.
What is an ion?It is an atom with a positive or negative charge due to either loss or gain of electrons.
Every atom tends to have a noble gas configuration for stability and they either tend to lose, gain, or share electrons to achieve it.
The oxygen atom generally gains 2 electrons to complete its octet and has a net -2 charge.
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Change to hypothesis
What effect does the water temperature have on solution rate?
As the temperature of the water increases so does the solution rate as the atoms gain more energy therefore there will be more frequent collisions.
Jake is taking photos of his neighbor's home to help them list and sell the house. It is
important to have a wide variety of photos to choose from, so he is taking multiple
shots of each room--some from the doorways, some from floor-level, some from up
above, and some from a corner of the room. What is Jake playing around with as he
photographs each room?
O motivation
O decor
O lighting
O angles