Answer:
I am writing this in response to a letter regarding evolution. Evolution is increasingly solid, not shaky. Darwin’s “theory” or explanation was a way of understanding what he had discovered (which did not include genes, chromosomes, DNA or nucleotide bases). Our explanations now include genetics and the commonality of mutation.
Proofs are solid, not in question by serious scientists. Direct observation is one, which we see in the fact that this year’s flu evolved a little too far from last year’s, so flu shots are less effective this year than we would like them to be.
Fossils tell the story well: whales with legs, dinosaurs with feathers and Tiktaalik. The latter was found in the Canadian north and is part fish, part amphibian, before there were ever any amphibians. Imperfection is a good proof: think of your useless appendix, the very bad design of your ankles, knees, and back (talk to a chiropractor about that). You have big toes because they used to be useful thumbs for your grasping feet.
Many other animals and even plants similarly have flaws that show their evolutionary past. Two large human chromosomes reflect the coming together of two chimpanzee chromosomes each.
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What are abiotic things made of if they are not made of cells?
Answer:
Light, minerals, and things from the periodic table!!
Explanation:
Q. What are peristaltic movements ?
➜ The contraction and expansion movements of the walls of food pipe are called peristaltic movements.
This movement pushes the food in forward direction in the alimentary canal.Compare photosynthesis and cellular respiration. In what types of cells do these processes occur?
Answer:
photosynthesis occur in the chloroplasts ,cellular respiration occurs in the mitochondria
List 4 differences between aerobic and anaerobic cellular respiration processing of sugar.
Water travels down in a
waterfall at a rate of 15
feet per second.
I
Answer:
ok be more specific and I will answer it in the comments
I can't help only knowing that water goes at 15 ft per second
Explanation:
please let me know, thank you!
Answer:
A
Explanation:
Answer:
B
Explanation:
How would you differentiate a "living" and "non-living" thing? What key characteristics separate the two?
Explanation:
All living things breathe, eat, grow, move, reproduce and have senses. Non-living things do not eat, grow, breathe, move and reproduce. They do not have senses.
Can I put a 4 foot corn snake in a 18 gallon tank?? If not what size?? Thank you!
No
Explanation:
A cone snake needs at least 20 gallon tank with more width than height.
Which 3 are the biggest problem facing our environment today. (choose only 3)
Maintaining Biodiversity
Pollution
Habitat destruction
Resource use
Deforeststation
Population growth
Answer:
pollution
deforestation
population growth
True or fasle? Cells have to divide when becoming too large so that the cell can
maintain homeostasis.
Answer:
True
Explanation:
The cell has to dividewhen it comes to large, because the cell wall is not big enoughtpo maintain all inside the cell when to large.
when does land breeze blow and why?
Radiometric dating allows us to determine...
a. Which rock layers are the oldest.
b. The relative ages of the layers of rocks and the fossils within
them.
c. The exact or absolute age of rock layers.
d. A and B are correct.
e. A and C are correct.
Answer:
a and c are the correct answer so option E. thank you .
BIO HELP
right answer gets brainliest
Which statement best describes what is happening in the cell above?
The cell is in anaphase because the sister chromatids have separated.
The cell is in prophase because the sister chromatids have condensed.
The cell is in telophase because the chromosomes are still paired.
The cell is in metaphase because the chromosomes have replicated.
Based on the stages of cell division, the picture depicts the process of anaphase because the sister chromatids have separated
What is cell division?Cell division on is the process by which cells divide to produce new daughter cells.
The process of cell division is of two types known as mitosis and meiosis.
Cell division occurs in four stages:
anaphaseprophase telophase and metaphaseIn anaphase, the sister chromatids separates.
Therefore, the picture depicts the process of anaphase because the sister chromatids have separated
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What's the answer please?
the T allele contains a mutation that occured during DNA replication. It's probably a point mutation
HELP!!!! 50PTS!!!!!!
A species of fish is unintentionally introduced into a marine ecosystem. The species has a similar diet to an existing fish species, creating competition for food. Which of the following must occur for the existing species to be more resilient in the environment? (3 points)
Individuals within the existing species' population must evolve traits that provide a survival advantage.
Individuals should have less genetic diversity to become more similar and evolve in the same direction.
Natural variations in phenotype must be present in the existing species' population.
The existing species must reduce its rate of reproduction to produce only the most fit offspring.
of
Evolution of a species acts on the
the species, not the
DONE
Answer: https://screenshare.host/26OGVD
Explanation: my thing is messed up but thats the answer
Answer:
Evolution of a species acts on the POPULATION of the species, not the INDIVIDUALS.
Edge 2021.
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A trait that occurs in 900 individuals out of a total of 1,800 individuals occurs with a probability of
Answer: 25
Explanation: I hope this helps you out <3
A trait that occurs in 450 individuals out of a total of 1,800 individuals occurs with a probability of 25.
Which of the following statement about gene mutation is not correct. It:
a) Can be inherited
b) May result in a change in the number of bases that make up the gene
c) Always results in a change in the protein for which the gene codes
d) May result in a change in the order of bases that make up the gene
Answer:
c) Always results in a change in the protein for which the gene codes
How does artificial selection differ from natural selection? Choose all that apply.
O During artificial selection, the mating pairs are selected by humans, not the organisms.
O The outcomes of artificial selection are predictable.
O Artificial selection requires variety in a population.
O Artificial selection does not help a population adapt to its environment.
Answer:
All answers should be selected.
Explanation:
Artificial selection means humans select the mating pairs which makes the outcomes predictable. Variety is required because it is how humans can "customize" the traits of an organism. However, it does not help a population adapt to its environment because these traits are made for human satisfaction, not the survival of an organism.
Si la filosofia es un saber acerca de las cosas desde un punto de vista universal, entonces dificilmente sea ciencia
Explanation:
Esta afirmación es correcta, porque si bien la ciencia se deriva de la filosofía, la filosofía es la necesidad humana de obtener conocimientos y así desarrollar un pensamiento racional, crítico y diferente al sentido común, y por tanto se conceptualiza como algo más subjetivo, cultural y más amplio que la ciencia. , que se basa en hechos y estudios para respaldar un análisis. A través de la filosofía es posible desarrollar la ciencia, pero son cosas diferentes porque la ciencia está ligada al empirismo y la filosofía es más amplia y comprensiva.
1.
What is the basic level of an ecosystem?
population
community
individual organisms
ecosystem
Answer: 3rd one
Explanation:
HELP I AM IN A TEST! I WILL MARK AS BRAINLIEST IF CORRECT!
Which of the following statements is true?
Fusion reactions split hydrogen nuclei apart.
Fission reactions release more energy than fusion reactions.
Nuclear power plants change electricity into nuclear energy.
U-235 is an isotope of uranium.
Answer:
Fission occurs when a neutron slams into a larger atom, forcing it to excite and spilt into two smaller atoms—also known as fission products. Additional neutrons are also released that can initiate a chain reaction.
When each atom splits, a tremendous amount of energy is released.
Uranium and plutonium are most commonly used for fission reactions in nuclear power reactors because they are easy to initiate and control.
The energy released by fission in these reactors heats water into steam. The steam is used to spin a turbine to produce carbon-free electricity.
Explanation:none
Answer:
Nuclear power plants change electricity into nuclear energy.
Explanation:
Write a 2 sentence summary about cellular respiration.
Answer:
I looked it up and this what it said
Explanation:
"Cellular respiration is the process in which cells break down glucose, release the stored energy, and use it to make ATP. The process begins in the cytoplasm and is completed in a mitochondrion. Cellular respiration occurs in three stages: glycolysis, the Krebs cycle, and electron transport."
Cellular respiration can be summarized as:
What is cellular respiration?Cellular respiration is the mechanism by which living cells break down glucose molecules and release energy in the form of ATP molecules.
Energy coupling can be seen in cellular respiration.
Glucose is broken down in an exothermic reaction and the energy released powers the endothermic reaction of ATP generation.
Glycolysis, the TCA cycle, and the electron transport chain are the three steps of cellular respiration.
From one molecule of glucose, 38 molecules of ATP are created in all three stages of cellular respiration.
(Glucose) C6H12O6 + 6O2 → 6CO2 + 6H2O Chemical Energy (in ATP)
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What two chromosomes do males have for gender?
A.Sperm cells do not contain sex chromosomes.
B.X and Y chromosomes
C.X chromosomes
D.Y chromosomes
Answer:
option b X and Y chromosomes is the answer for this question
Sir Isaac Newton probably never conducted any experiments.
True
False
Answer:
false
Explanation:
HELP PLEASE!!!
A. Describe the difference between gradualism and punctuated equilibrium.
B. Describe the conditions under which new species may arise.
C. Explain the difference between allopatric and sympatric speciation.
D. Describe the role of prezygotic and postzygotic barriers in the process of speciation.
A. Both theories describe the rates of speciation. For Gradualism, changes in species is slow and gradual, occurring in small periodic changes in the gene pool, whereas for Punctuated Equilibrium, evolution occurs in spurts of relatively rapid change with long periods of non-change.
B. New species arise through a process called speciation. In speciation, an ancestral species splits into two or more descendant species that are genetically different from one another and can no longer interbreed.
C. Allopatric speciation occurs when two species are living in separate environments and therefore there is no gene flow between the populations. ... Sympatric speciation occurs when two species are living in the same environment.
D. Reproductive isolation is a mechanism that keeps species from mating with others. Prezygotic isolation prevents the fertilization of eggs while postzygotic isolation prevents the formation of fertile offspring. ... Postzygotic mechanisms include hybrid inviability, hybrid sterility and hybrid "breakdown."
List all the systems involved in each of the following scenarios:
Answer:
The 11 organ systems include the integumentary system, skeletal system, muscular system, lymphatic system, respiratory system, digestive system, nervous system, endocrine system, cardiovascular system, urinary system, and reproductive systems.
Explanation:
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A lake is home to a large number of trout. Identify what is most likely to happen if a chemical is dumped into the lake.
I. The trout will not be affected by the pollution.
II. The number of trout will increase.
III. The trout will suffer from disease.
A) I
B) I and II
C) III
D) II and III
Answer: C
Explanation: The process that occurred in the lake is natural selection. In the presence of an external environmental influence such as pollution, only the trouts that were fit to survive or in other words those that have the alleles that help in adapting to the new conditions live and increased in numbers. In such a case, one can say the fittest of the organisms survived and the corresponding allelic frequency in that population increased over time. The organisms carrying the other alleles died due to pollution and hence the overall frequency of alleles change.
A lake is home to a large number of trout the trout will suffer from disease is most likely to happen if a chemical is dumped into the lake. The correct option is C.
What is chemical pollution?Chemical pollution is the contamination of our environment with chemicals that are not naturally present.
According to scientific evidence, the trout in option will most likely suffer from disease.
Chemical pollution can harm aquatic life, including fish, by lowering oxygen levels, changing the pH balance of the water, and introducing toxins into their food chain.
Exposure to such chemicals can weaken the fish's immune system, making them more vulnerable to disease.
Option B and A is also less likely to be true because the introduction of chemicals into the water can disrupt the ecosystem's balance and affect the availability of food and oxygen, causing the trout population to decline.
Thus, the correct option is C.
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The capybara is the largest rodent in the world. The anaconda is a giant water snake
that can eat a single capybara whole. Which of the following describes the
anaconda?
a)prey
b)predator
c)parasite
d)host
b) predator, this is because the capybara is the prey and c) + d) just dont work
Answer:
Answer is B
Ok I pull up
By favoring some alleles over others, natural selection can lead to survival advantages for some organisms. Which of the following is NOT an adaptation as a result of natural selection?
a
A certain snake species has many members of various colors.
b
A moth's wing markings help it blend into the forest habitat.
c
A bird that dives into water to hunt fish has webbed feet.
d
A bird has a certain beak size that allows it to eat seeds of various sizes.
Answer:
The Answer is A
Explanation: