SOMEONE PLZ HELP ME!!!!!!!!!!!!!!!!!!!!!!
Which of these are common theories that explain how the First Americans came to North and South America?
Check all that are true.
They traveled across the ocean on boats.
They built a land bridge.
They rode across the ocean on large animals.
They migrated across Beringia.
Answer:
I'm pretty sure they migrated across Beringia with a land bridge... Let me know if I am wrong!
Explanation:
B and D
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What does glucagon do for the body
1. tells the body to release insulin to lower blood glucose levels
2. tells the body to release glycogen to increase blood glucose levels
3. tells the body to release insulin to increase blood glucose levels
4. tells the body to release glycogen to decrease blood glucose levels
What effect does development, through erecting buildings and concrete pavement, have on the recharge of aquifers and the quality of the water?
Answer:
Infiltrate rate decreases and also water quality.
Explanation:
There is adverse effect of erecting buildings and concrete pavement on the recharge of aquifers and the quality of the water because the water is unable to infiltrate inside the soil due to concrete floor and the recharging of aquifers is not possible. These buildings and concrete pavements also reduces the quality of water due to degradation of sediments present in the building with the passage of time.
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Which type of energy refers to the sum of potential and kinetic energies in the particles of a substance?
SERE
motion
stored
internal
heat
Answer:
internal energy.
10. Explain the difference between Biological & Cultural Carrying Capacity.
Answer:
I do not know
Explanation:
Answer: Biological carrying capacity describes which species are able to coexist in a niche. Cultural carrying capacity describes the ability of a human population to thrive and create culture in meager circumstances.
Explanation:
What does this model imply about the relationship between two processes All but one choice could apply
Which word defines the group of all penguins living together in one area?
A) habitat
B) population
C) species
D) community
Answer:
B) Population
19. What macromolecule is common to surface markers, receptors,
carriers and channels? *
protein
carbohydrate
lipid
nucleic acid
How does weathering affect Earth's surface?
Answer:
Weathering can wear away any exposed surface on earth over time. It can cause rough surfaces to become smooth, much like a tumbler smooths a rock. An obvious example of weathering is the change of the landscape at the sea. The tides can cause the beach to become smaller or larger.
Explanation:
Answer:
Weathering is the breaking down or dissolving of rocks and minerals on Earths surface.
Explanation:
Once a rock has been broken down, a process called erosion transports the bits of rock and minerals away. ... Weathering and erosion constantly change the rocky landscape of Earth. Weathering wears away exposed surfaces over time.
What is the role of lay person like you in the mission of the church today?
Explanation:
base on the person opinion
compare endocytosis and exocytosis. ( one similarity and one difference)
Answer:
Similarities include: Both are involved in transporting big molecules across the membrane. ... formed from the cell membrane which then gets into the cytoplasm. Exocytosis increases the size of the cell membrane while endo does the opposite.
1 Which statement about the relationship between an organism's traits and its genes is true?
A.
An organism's genes are a direct result of its inherited traits.
B.
Genes code for proteins that determine an organism's traits.
C.
Traits code for the proteins that determine an organism's genes.
D.
Genes code for the DNA that determines an organism's traits.
2. A mutation occurs in a sequence of DNA. How could the DNA mutation affect the protein produced?
A.
The chromosomes in the protein could be changed.
B.
The protein would cause other proteins to mutate.
C.
The structure of the protein could be changed.
D.
The mutation could change every protein in the cell.
Answer:
1. The true statement about the relationship between an organism's traits and its genes is that genes encode the proteins that determine an organism's traits (option B).
2. A DNA mutation can cause the structure of the protein to be changed (option C).
Explanation:
DNA contains the genetic information necessary for the structure and function of living beings. It is a molecule that, once transcribed into mRNA, dictates the rules for protein synthesis.
1. Chromosomes are composed of a DNA molecule, whose segments form the genes that contain specific base sequences to determine a trait.
The information from the DNA is transcribed into the mRNA, which is responsible for carrying it to the cytoplasm where protein synthesis occurs. These proteins formed from the genetic code determine the different traits in living beings. So, genes encode the proteins that determine an organism's traits.
2. Since the DNA contains the information needed to transcribe it into the mRNA and for the mRNA to initiate protein synthesis, any alteration in the DNA base sequence -due to mutation- can be produced:
A transcription of the mRNA with the alteration That during mRNA translation, the codon that forms an amino acid, or that determines the stop of protein synthesis, is changed. The alteration or change, consequently, of the synthesized protein.There is a relationship between the DNA mutation and the structure of the protein being changed.
Which describes an altocumulus cloud?
a.
high, feathery cloud
c.
low storm cloud
b.
puffy mid-level cloud
d.
high cloud made of ice crystals
Please select the best answer from the choices provided
A
B
C
D
Answer:
Puffy mid level-cloud.
Explanation:
So the answer is B. Got it right on edge 2021 Stay safe!!
Answer:
the answer is B.)
Explanation:
i did the quiz a week ago-
i need help with this
Answer:
c is ox and b it the h20 and a is the plastic cup?
True or false?
An apple, potato, and onion all taste the same if you eat them with your nose plugged
Answer:
True
Explanation:
Answer:
True
Explanation:
It is frequently quoted that upwards of 80% of our taste is made up by smell. So if you plug your nose and cover your eyes, the taste between an apple and onion should be indistinguishable. Potato's will also taste the same .
The process by which a modified stem or root of a parent plant grows offspring that remain attached is called(1 point)
vegetative reproduction.
fragmentation.
binary fission.
tuber reproduction.
Answer:
vegetative reproduction
Explanation:
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Please someone help me with my Biology questions. PLEASE
Answer:
I cant see the question
Explanation:
Adam's wife is concerned about his recent behavior. He wanders from room to room in their home and often has difficulty finding the front door, yet his vision seems fine. He complains that he feels odd sensations on his skin like bugs landing on him but when he goes to brush them off there are no bugs.
What part of the brain is damaged?
What functions does this part of the brain perform?
Answer:
La esposa de Adam está preocupada por su comportamiento reciente. Vaga de una habitación a otra en su casa y, a menudo, tiene dificultades para encontrar la puerta principal, pero su visión parece estar bien. Se queja de que siente sensaciones extrañas en su piel como insectos que se posan sobre él, pero cuando va a sacudirlos no hay insectos.
¿Qué parte del cerebro está dañada?
¿Qué funciones realiza esta parte del cerebro?
Explanation:
Adam's wife is concerned about his recent behavior. He wanders from room to room in their home and often has difficulty finding the front door, yet his vision seems fine. He complains that he feels odd sensations on his skin like bugs landing on him but when he goes to brush them off there are no bugs.
What part of the brain is damaged?
What functions does this part of the brain perform?
According to the chart above, the largest percentage of a person’s carbon footprint comes from:
a.
Electricity
c.
Recreation and Leisure
b.
Food and Drink
d.
Gas, Oil and Coal
Answer:
D
Explanation:
D has the highest percentage at 15%. It is followed by C, at 14%.
5. Some advantages of sexual reproduction include: (select all that apply) *
a.genetic variation
b.improves chances of adapting to the envionment
c.helps species survive catastrophes
d.Certian genes work beter than other
Some advantages of the sexual reproduction include genetic variation. Genetic variation results into changes in the genetic material (DNA). Thus, the correct option is A.
What is Genetic variation?Genetic variation is the difference in the DNA (deoxyribonucleic acid) among individuals or the difference between different populations. The multiple sources of genetic variation include mutations and genetic recombination. Mutation is the changes in the genetic material of an organism which are the ultimate sources of genetic variation, however other mechanisms, such as genetic drift, contribute to it, as well.
Genetic diversity is important because it gives the species a better chance of survival through variations. However, the genetic diversity can be lost from the species when the populations get smaller and isolated from each other, which decreases a species' ability to adapt and survive better in the condition.
Therefore, the correct option is A.
Learn more about Genetic variation here:
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How might a plant cell compensate for the excessive membrane fluidity that occurs during prolonged exposures to elevated temperature?A) Reduce membrane cholesterol content.B) Alter the lipid composition to have longer fatty acyl tails and fewer double bonds.C) Alter the lipid composition to have shorter fatty acyl tails and more double bonds.D) Alter the lipid composition to have shorter and more unsaturated fatty acyl tails.E) Reduce cholesterol content and alter the lipid composition to have shorter fatty acyl tails.
Answer:
E) Reduce cholesterol content and alter the lipid composition to have shorter fatty acyl tails.
Explanation:
Reducing the amount of fat makes the tissues or membranes have less plasticity, since these fatty acids with high temperatures increase their fluidity, are less dense and give greater plasticity in their elastic modulus.
The most important structure in the lower respiratory tract is the alveolus.
O True
O False
Answer:
true
Explanation:
the lower respiratory tract contains:- trachea, bronchial tree, and lungs.
Will give brainliest please help me.
Answer:
It looks like it could be the first one or last. But I'm pretty sure it's the last one.
The first organisms to appear on Earth did not need?
a. oxygen.
cells.
b. nitrogen
d chemicals
C
Please select the best answer from the choices provided
Ο Α
B
C
Answer:
ANS IS DDDDDDDDDDDDDDDDDDDDDDDDDDDDDdd
Explanation:
You and your friends go to the beach for vacation. You all walk down to the beach to go swimming. When you get there, you see the water is murky and green, and there are algae blooms floating on top. If it is excess nutrients which are feeding the algae blooms and lowering the oxygen content in the water, that process is called:_______.a. nutrient cycling.
b. nitrification.
c. eutrophication.
d. hypoxia.
Answer: The process is called EUTROPHICATION. The correct option is C.
Explanation:
Eutrophication is a type of environmental pollution where by there is an increase in nutrient salts of a water body which can lead to structural changes in the affected aquatic ecosystem. These changes includes:
--> Increase in production of algae: this effect causes algae blooms which makes the water murky, greenish and unpleasant for certain activities such as swimming.
--> Decrease in aquatic life: the presence of excessive growth of algae which are often degraded by microorganisms. When the rate of degradation of the algae by microorganisms is greater than that of oxygen regeneration a hypoxic state occurs which is harmful to aquatic life example fishes.
When an object is not in motion, it can still have a form of energy. What form of energy does an object have due to its distance from Earth?
Answer:
Gravitational energy
Explanation:
An object's height above the ground (Earth) gives it gravitational energy.
Answer:
gravitational potential energy
Explanation:
correct on edge
T/F Plants do not have cell membranes because they have cell walls.
A. True
B. False
Answer:
False
Explanation:
Plant cells have a cell membrane. They are eukaryotes because they have membrane bound organelles.
Hope this helped!
what cause asexual reproduction
Answer:
It is a type of reproduction that does not involve the fusion of gametes or change in the number of chromosomes.
The offspring that are produced by asexual reproduction from a single cell or from a multicellular organism inherit the genes of that parent and thus have the sane identical identities of the parent.
The largest mass extinction was in the
a. Precambrian time.
b. Cenozoic era.
C. Paleozoic era.
d. Mesozoic era.
Answer:
♡ hi fairy ♡
- Mesozoic, I just learned about this! it's so sad but it did help our society.
have a great day! hope i could help.
~madeline
✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧･ﾟ: *✧･ﾟ:･ﾟ✧*:･ﾟ✧
Explanation:
The largest mass extinction was in the: C. Paleozoic era.
The Paleozoic era is simply referred to as the earliest time of the three (3) geologic eras during the Phanerozoic era.
Generally, there are six (6) geologic periods in the Paleozoic era and they are listed from the youngest to oldest as;
The Permian.The Carboniferous.The Devonian.The Silurian.The Ordovician.The Cambrian.Some of the activities that took place between the start and end of the Paleozoic era time scale include;
I. In the early period of the Paleozoic era (The Cambrian), there were marine living organisms called phyla.
II. During the Paleozoic era, volcanic activities were experienced.
III. The Paleozoic era was prone to erosion and deposition of marine fossils.
IV. Lastly, the Paleozoic era was characterized by the largest mass extinction.
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