Answer:
Higher levels of UV light on land
Explanation:
The algae began to appear because of the presence of ultraviolet light that was emitted by sunlight, this generated the increase in temperature of the waters, therefore under the glaciers the perfect climax was formed so that these could begin to emerge phenomena, not excessive sunlight, the great presence of oxygen, is what led to the appearance of these algae.
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Which of the following increases soil acidity?
planting acid-loving plants
adding compost
adding aluminum
acid rain
Answer:
acid rain
Explanation:
Answer: The correct answer is acid rain
Explanation: This answer has been confirmed correct.
2. Which statement below is true regarding cell specialization?
Specialized cells have specialized functions.
Specialized cells are found in unicellular organisms only.
Specialized cells are found in limited numbers in large, multicellular organisms.
Embryos do not contaig specialized cells.
Answer:
Specialized cells have specialized functions
Explanation:
Carbon sinks are "stopping up"(no longer able to absorb CO^2)because of _________________and ___________________
Answer:
0 and 2
Explanation:
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(This is 7th grade science).
Answer:
Explanation:
skin: y, n, n, n , animal
neurn: y, y, n, n , nonliving
sand: n,n,n,n nonliving
maple leaf y, y, y, y, plant
blood: y, y,n,n animal
e.coil: y, n, n, n bacterial
root hair: y, y, n, n, animal
What is succession and what are the steps to succession? Why is it important?
Answer: Succession Planning is essentially planning for and executing smooth transitions of leadership positions. This includes recruiting new talent, executive search, selection assessments, onboarding the new leader, and successfully transitioning the new leader in and the old leader out.
Scientists have discovered that there are reproductive isolating mechanisms that can stop a population from interbreeding and possibly lead to the formation of a new species. What is this process called
Answer:
Polyploidy
Explanation:
The isolating mechanism that is capable of stopping a population from interbreeding, possibly leading to speciation is polyploidy.
Polyploidy is a condition in which a species of an organism will have multiple, instead of a diploid, chromosomal set as a result of an error during meiosis.
Non-disjunction during meiosis can make a gamete have a diploid number of chromosomes in the place of a haploid chromosome. A 2n gamete fusing with an n gamete will result in a triploid organism, 2n plus 2n gametes will result in a tetraploid organism, etc.
If the extra chromosomal set is from the same species, such polyploidy is termed autopolyploidy, otherwise, it is termed allopolyploidy. Having extra sets of chromosomes has the capacity to make an organism to be reproductively incompatible with normal diploid organisms of the same species. However, polyploid organisms can either self-pollinate or cross with another polyploid organism, a process that can lead to sympatric speciation.
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Answer:
tundra⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀⠀
Answer:
I think its tundra
Explanation:
A change in the nucleotide sequence
produced during DNA replication
DNA is a dynamic and adaptable molecule. As such, the nucleotide sequences found within it are subject to change as the result of a phenomenon called mutation. Depending on how a particular mutation modifies an organism's genetic makeup, it can prove harmless, helpful, or even hurtful.
6CO2 + 6H20 602 + C6H1206
Molecular Energy in Photosynthesis
Name of
Molecule
Chemical
Formula
Amount of Energy per
Molecule (in kJ per mole)
Carbon dioxide
CO2
799
Water
H20
467
Oxygen
O2
495
Glucose
C6H1206
9,467
Which statement correctly describes the flow of energy in photosynthesis?
A Photosynthesis releases energy when carbon dioxide and water combine to form glucose molecules.
B Photosynthesis releases energy when the reactants rearrange and form the bonds in the products,
Photosynthesis stores energy because energy is released when glucose is formed from carbon dioxide and water.
D Photosynthesis stores energy because more energy is stored in glucose than it is in carbon dioxide or water.
Answer:
Photosynthsis stores energy because more energy is stored in glucose than it is in carbon dioxide or water is the correct answer.
Explanation:
Allie and Roman are trying to graph the blue line shown
on the left. Only one of them has a correct answer.
Allie entered this equation: y = 2x - 8
Roman entered this equation: y=8 - 2x
Who is correct?
Allie
Roman
Explain your thinking.
Answer:
roman
Explanation:
According to the passage, what causes mutations during protein synthesis?
A. A wrong base becomes a permanent part of a new DNA sequence.
B. Most mutations happen spontaneously as DNA replicates itself.
C. A great many mutations occur due to chemicals in the environment.
D. Mutations do not occur during the process of protein synthesis.
Answer:
d.
Explanation:
A widow's peak is dominant over a straight hairline.
The genotypes of the offspring are WW, Ww, ww, and
ww.
A widow's peak is dominant over a straight hairline.
The genotypes of the offspring are WW, Ww, ww, and
ww.
What are the phenotypes of the offspring?
2 widow's peak, 2 straight hairline
3 widow's peak, 1 straight hairline
1 widow's peak, 3 straight hairline
4 widow's peak, 0 straight hairline
Answer:
I think its
C) 1 widows peak 3 straight hairline
Explanation:
Answer:
I believe it is a.
Explanation:
This is becuase 2 are saying that it is dominant for widows peak. And two are saying that straight is dominant.
The embryonic stage where the embryo cells are arranged into a hallow ball is called
A) Morula
B) Blastula
C) Grastula
D) Fetus
PLEASE NO TIME WAISTERS
Answer:
blastula
Explanation:
23. A PCR reaction is performed, and the negative control demonstrates the presence of a detectable number of PCR product (amplicons) by capillary electrophoresis. What is the most likely cause?
Answer:
Contamination of the control sample (negative control) with DNA
Explanation:
The Polymerase Chain Reaction (PCR) is a technique widely used in molecular biology laboratories to amplify a target DNA fragment using primer pairs and DNA polymerase. In PCR experiments, it is imperative to include both positive and negative controls. The positive control refers to the amplification of a PCR product (amplicon) of known molecular size during PCR reaction in order to ensure the correct molecular weight of the target DNA fragment. The negative control refers to the inclusion of a sample without DNA in order to ensure that no contamination with DNA has occurred in the other samples.
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Answer:
B.
Explanation:
A scientist is conducting research about all the plants and wildlife in the Mojave Desert as well as the desert’s resources, such as water and soil. The scientist is studying
Answer:
An ecosystem
Explanation:
Answer:
D. an ecosystem
Explanation:
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Explain why the frequency of the tusklessness trait is increasing in the African elephant population. Justify your answer using the principles of natural selection.
Answer:
srjddjj and the way I see that one thing is the best thing that can happen is to be able and not to
Explanation:
semester and the next week yea
Are gender traits completely a result of societal expectations?
[tex]\huge\star{\underline{\mathtt{\red{A}\pink{N}\green{S}\blue{W}\purple{E}\orange{R}}}}\star[/tex]
No. Gender traits in humans are largely determined by biophysical processes. There seems to be a vocal political faction that is trying to convince people in the name of liberty and equality that gender traits are completely learned, and therefore arbitrary.
But this claim disagrees with scientific evidence. In general, boys play more with cars and girls play more with dolls not because their parents are perpetuating outdated gender stereotypes, but because their brain is telling them to.
This fact does not mean that boys have to play with boy toys, or that boys who play with dolls aren't really boys. It is just a scientific observation about average behavior and its link to fetal development
Animal cell organelles
Answer:
Nucleolus: Synthesis of ribosomal RNA.
Nucleus: Contains genes (chromatin).
Ribosomes: Protein synthesis.
Vesicle: Transport of materials within the cytoplasm.
Rough endoplasmic reticulum (RER): Protein synthesis.
Golgi Apparatus: Processes, packages and distributes proteins to other organelles for export.
Cytoskeleton: Structural support of cells; facilitates the movement of the organelles.
Smooth endoplasmic reticulum (SER): Lipid synthesis; drug metabolism.
Mitochondria: Produces energy for the cell called ATP.
Vacuole: Protection of the cell, collect waste products and maintain internal pH, among others. (*) Only in some animal cells.
Lysosome: Cellular digestion.
Centrosome: regulate the cell-cycle progression.
Cell membrane: separates the cell from its environment; regulates the movement of materials in and out of the cell.
Answer:
Animal Cell organelles are cell membrane, cytoplasm, lysosomes, ribosomes, a nucleus, mitochondria, the Golgi apparatus or Golgi bodies, ectoplasmic reticulum, and vacuoles.
Explanation:
You might not count the cell membrane and cytoplasm as organelles because they hold the cell together. the cytoplasm is the fluid in which the other organelles float in, and the membrane is like a fleshy crust for the cell.
Plant cells have two more organelles/structures than animal cells. They are the chloroplast and cellwall. Plant cells also have a central vacuole and maybe some few smaller ones, in contrast to animal cells with many smaller vacuoles. Vacuoles are where things the cell needs (like water) are stored.
Please mark Brainliest!
Which term describes a single female arctic fox?
Biome describes a single female arctic fox, i guess
Answer:
biome.
Explanation:
By :Organizational Hierarchy
Read my bio
What does ambulocetus translate to?
Ambulocetus (meaning "walking whale") is an early cetacean with short limbs and large feet used for swimming. Along with other members of Ambulocetidae, it is a transitional fossil that shows how whales evolved from land-living mammals.
Answer:
Walking whale that swims
Explanation:
its a cetacean with short limbs and large feet used for swimming
When molecules move down the concentration gradient, molecules are moving
from *
an area of low concentration to an area of a higher concentration
areas that are equal in concentration
an area of high concentration to an area of a lower concentration
O areas with low concentration of water to an area of a higher concentration of water
Answer:
(When molecules move in this way, they are said to move down their concentration gradient.) Three common types of passive transport include simple diffusion, osmosis, and facilitated diffusion. Simple Diffusion is the movement of particles from an area of higher concentration to an area of lower concentration.
Explanation:
I think
✨PLEASE HELP✨DUE SOON✨
Answer:
50%
Explanation:
Type O is canccelled out, so there is a 50% chance of the baby getting type A blood and a 50% chance of the baby geting type B blood.
what is biological diversity??? I have a test on It plzzz help!!!!
Answer:
Biodiversity is the variety and variability of life on Earth. Biodiversity is typically a measure of variation at the genetic, species, and ecosystem level. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity.
A volcano on a volcanic island erupts. (No life is present.) Which two-sphere are interacting?
hydrosphere and geosphere
hydrosphere and atmosphere
atmosphere and lithosphere
biosphere and hydrosphere
Answer:
hydrosphere and atmosphere
Explanation:
Answer:
hydrosphere and atmosphere
Explanation:
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If animal droppings spread seeds then when spreads it also then which spreads it faster?
A. Animal droppings.
B. Wind.
Answer: Animal droppings
Explanation:
a-t base pairs in a dna double helixare chemically distinct from G-C base pairs. form three hydrogen bonds with each other. are more heat stable than G-C base pairs. are not accessible to DNA binding proteins. are of a different length than G-C base pairs.
Answer:
A-T base pairs in a DNI double helix are chemically distinct from G-C base pairs.
Explanation:
Nitrogenated bases that form nucleic acids correspond to purines and pyrimidines. Adenine and guanine derive from purines, while Thymine and Citocine derive from Pyrimidines.
In the DNA molecule, Adenine (Purine) always form pairs with Timine (Pyrimidine), while Guanine (Purin) form pairs with Cytosine. Two hydrogen bonds unite the pair A-T, while three of them unite the pair G-C.
The structure of these bases is different hence, the chemical structure of the pairs is also different.
Burning oil and coal adds ______ to the atmosphere.
Answer:
carbon dioxide
Explanation:
because when these things burn they produce many harmful gases which harm the environment and cause pollution
18 points! A BRAINLY IF U ARE CORRECT> QUESTION: When you open the door to a refrigerator for a minute, what happens? Also, Expain your answer.
A. Thermal energy in the air outside the refrigertor is transferred to the inside of the refrigerator.
B. Thermal energy in the refrigerator is transferred to the air outside the refrigerator.
C. The temperature of the air inside the refrigerator decreases.
D. The teperature of the air just outside the refrigerator increase.
Answer:
The Answer is A
Explanation:
Explanation is the thermal heat energy from the outside is transferred by diffusion to the inside of the fridge applicably making the inside hotter and the outside colder in the immediate area.
A mangrove community has the following food chain:
Mangrove → mangrove tree crab roseate spoonbil → American crocodile
Which population would be most likely to increase if roseate spoonbills
disappeared from the community?
O A. Mangrove
O B. American crocodile
OC. Roseate spoonbill
OD. Mangrove tree crab
Answer:
D. Mangrove tree crab. There would be a drop in the predators that feed on them. Crocodile populations would drop to food shortage, and mangroves might also suffer from the high crab population, so only D is correct.