Why did blson almost go extinct in the late
1800s? (NO LINKS)
A) Climate change
B) Disease
C) Ice Age
D) Overhunting
Why has Earth’s climate changed so rapidly in recent years? A The sun has gotten much hotter. B People are eating too many plants. C People are burning too many fossil fuels. D The Earth is rotating too slowly to cool off effectively.
Answer:
The answer is C
Explanation:
The number of worldwide standard time zones is
*
15
30
12
24
Answer:
24
Explanation:
What is the positive aspect of GMO
The pros of GMO crops are that they may contain more nutrients, are grown with fewer pesticides, and are usually cheaper than their non-GMO counterparts. The cons of GMO foods are that they may cause allergic reactions because of their altered DNA and they may increase antibiotic resistance.
Today, those who directly see the most benefits from GMOs are farmers and agricultural companies. ... GMOs are also used to produce many medicines and vaccines that help treat or prevent diseases. Before GMOs, many common medicines had to be extracted from blood donors, animal parts, or even cadavers.
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Explanation:
There are multiple positive aspects of GMO, but it has many drawbacks as well. Genetically modified foods can become more resistant to disease, pests, and even natural disasters(floods, drought, etc.)
Which organelle is labeled a
Answer:
chloroplast
Explanation:
__________mutations can cause the
reading frame to be moved one direction
or the other.
A. Point
B. Inverted
C. Frameshift
Answer: C - Frameshift
Explanation:
Answer:
Frameshift
Explanation:
Inhibition of enzyme X by eutricoline prevents dehydration synthesis reactions
from occurring between DNA nucleotides. Describe the effect this has on the
replication process. Explain why eukaryotic cells treated with eutricoline do not
increase in number over time
Answer:trying to pass two huh
;-;
Explanation:
What is the most current theory for the formation of Earth's moon?
arth
Answer:
giant-impact theory
Explanation:
cichlids fish evolution, as seen in lake victoria in africa, is an example of ______ equilibrium.
Answer:
Evolution
Explanation:
The cichlids fish evolution, as seen in lake victoria in africa, is an example of Evolution equilibrium.
What is evolution?The gradual change of an organism over a period of time is called evolution.
Evolution is the population phenomenon. The sudden change in an individual is called a mutation.
These are the thing that leads to the evolution:-
Natural selection ReproductionCrossing over.Thus, is an example of Evolution equilibrium.
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When baking an empty pie crust
o poke holes in it
o weigh it down
o both choices
Answer:
I think the answer is C
Explanation:
whether falling dominoes form a wave and how do you now
Which of the following best describes a form of genetic drift in which the animal population is depleted, thereby reducing the population's genetic diversity?
A. bottleneck effect
B. disruptive selection
C. founder effect
D. gene flow
The bottle neck effect best describes a form of genetic drift in which a population of animals becomes smaller, thereby reducing the genetic diversity of the population. So, the correct option is A.
What is the Bottleneck effect?The bottleneck effect occurs when population numbers are dramatically reduced as a result of natural disasters such as earthquakes, floods, and other natural disasters. The new population is composed of organisms that were able to survive the catastrophe whose allele frequency will be radically different from the original allele frequency.
The bottle neck effect best describes a form of genetic drift in which a population of animals becomes smaller, thereby reducing the genetic diversity of the population.
Therefore, the correct option is A.
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how the rabbit population changed over the course of 10 years.
The rabbit population reached carrying capacity during the fourth year of the 10 years we set. Introduction: Population density is the number of individuals in a population per unit of area. Some limiting factors only affect a population when its density reaches a certain level.
Before cellular division, the cell must duplicate its DNA so that the daughter cells will contain complete copies of the dna. Which characteristic of DNA makes it most suitable as a molecule for this role?
A. DNA is located in the nucleus
B. DNA is a large macromolecule
C. DNA is made of repeating sugar-phosphate subunits
D. DNA is made of two strands of complementary nucleotides
Answer:
D. DNA is made of two strands of complementary nucleotides
Explanation:
As rightly stated in this question, DNA replication must occur prior to cell division because each daughter cells must receive an equal and correct amount of genetic material (DNA). DNA replication is the process by which the DNA molecule duplicates to form two identical copies of itself.
This replication characteristics of DNA is achievable because "DNA is made of two strands of complementary nucleotides". The double-stranded DNA first unwinds into two single strands. After which, each single strand serves as a template for the new DNA strand. Two strands of a DNA molecule are complementary to one another.
Un objeto posee una energía cinética de 300J, este mismo se ubica a 4m de altura y su masa corresponde a 10Kg. ¿Cuál es su energía mecánica?
Answer: 692 J
Explanation:
La energía mecánica es la energía que se utiliza para realizar un trabajo determinado y se calcula con la suma de la energía cinética y la energía potencial de un objeto. En otras palabras, describe la energía de un objeto debido a su movimiento, posición, o ambos.
La energía cinética es el trabajo necesario para acelerar un cuerpo desde el reposo hasta su velocidad final. Entonces, es la energía que posee un cuerpo debido a su movimiento. Cuando gana energía durante la aceleración, el cuerpo mantiene la energía cinética a menos que su velocidad cambie, y el cuerpo realiza la misma cantidad de trabajo al desacelerar desde su velocidad actual hasta un estado de reposo. Por otro lado, la energía potencial es la energía que posee un objeto debido a su posición con respecto a otros objetos. Los tipos más comunes de energía potencial incluyen a la energía potencial gravitacional de un objeto que depende de su distancia al centro de masa de otro objeto (La Tierra), la energía potencial elástica de un muelle o resorte extendido y la energía potencial eléctrica de una carga en un campo eléctrico.
La unidad de energía en el Sistema Internacional de Unidades (SI) es el julio, que tiene el símbolo J.
La energía mecánica se calcula de la siguiente manera (tener en cuenta que la aceleración de la gravedad es un dato tabulado de 9,8m/s^2):
Energía mecánica = Energía cinética + Energía potencial
Energía mecánica = (1/2 * masa * velocidad^2) + (masa * gravedad * altura)
Energía mecánica = 300 J + (10kg * 9,8m/s^2 * 4m)
Energía mecánica = 300 J + 392 J = 692 J
Which plant adaptation is most common in the Deciduous Forest biome?
A.
Leaves change due to changes in climate in the Fall and Spring.
B.
Plants can begin to grow under snow, grow close to the ground, and flower quickly.
C.
Roots that can store a lot of water grow.
D.
Some plants in this biome start growing on leaves due to a lack of sunlight on the ground.
PLEASE, PLEASE, PLEASE HELP!!! REAL ANSWERS ONLY!!! NO LINKS OR I WILL REPORT!!! NO BOTS EITHER!!!
Respond to the question: How do things move across a cell membrane? Give two examples. (5-8 sentences)
https://www.khanaca demy.org/gclassroom/test-prep/mcat/cells/transport-across-a-cell-membrane/v/how-do-things-move-across-a-cell-membrane
That is the video. Remove the space to make it work.
Answer:
osmosis ........... just use a paraphrasing tool for the explanation below
Explanation:
Another method of movement across the membrane is osmosis. Osmosis is the movement of water from a region of higher concentration to one of lower concentration. Osmosis occurs across a membrane that is semipermeable. A semipermeable membrane lets only certain molecules pass through while keeping other molecules out.
just use a paraphrasing tool
2
From the thousands that sprout, why will only 1 or 2 healthy
trees grow into the available space between other existing
trees?
Small sprouts will flourish as there is plenty of space on Earth for plants
to grow
Small sprouts will compete for resources as usual, volcanic eruptions do
not effect plants
Small sprouts will never survive in the soil mixed with volcanic dust.
Small sprouts will compete for the remaining space that has adequate
sunlight
Answer:
small sprouts will compete for the remaining space that has adequate sunlight
Which of these is the most serious impact to an ecosystem after a tornado?
A. an increase in biodiversity
B. soil erosion along with water pollution
C. the growth of plants in newly cleared areas
D. animals relocating to different habitats
Answer:
D
Explanation:
animals relocating to a different habitat could cause major impact in the food chain and would need different survival skills
Explaining hardy Weinberg equilibrium and the eastern squirrel/ how many in the population have the following genotypes
Answer:
Above ans is not Correct.
Can someone please help me!!
Answer:
A
Explanation:
maybe ahhhhhh its A i guess
Which of the following is an example of a trade-off?
O A. Selecting a bag that can be recycled over
one that cannot
B. Selecting a bag that produces less waste
over a bag that is more expensive
C. Selecting a bag that takes a lot longer to
break down in a landfill than the alternative
O D. Selecting a bag that produces less waste
over a bag that is more convenient
it’s environmental conditions change over time it is most likely a population of organisms in the environment will survive if??? HELP
how does the structure of the leaf allow it fulfil the requirements for gas exchange surface?
(pls don't put it in a file or pls no link) :)
Explanation:
The structure of the leaf is adapted for gas exchange. The cells in the spongy mesophyll (lower layer) are loosely packed, and covered by a thin film of water. There are tiny pores, called stomata , in the surface of the leaf. Most of these are in the lower epidermis, away from the brightest sunlight.
The stomata control gas exchange in the leaf. Each stoma can be open or closed, depending on how turgid its guard cells are.
In the light, the guard cells absorb water by osmosis, become turgid and the stoma opens.
In the dark, the guard cells lose water, become flaccid and the stoma closes.
Diffusion of carbon dioxide, oxygen and water vapour into (or out of) the leaf is greatest when the stomata are open.
Which of these does not represent a direct transfer of carbon
1.Air to trees
2.Giraffe to tree
3.Tree to Giraffe
Herbicides are used to kill weeds or plants growing where they are not wanted. A crop of corn has been genetically modified so that it is resistant to a type of herbicide that kills several species of weeds that commonly grow in the fields and interfere with growth of the corn crop.
Which question would help determine whether the corn is expressing the gene that provides herbicide resistance?
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Brown eye color (B) is dominant to blue color (b). A blue-eyed woman wants to marry a man that will give her a 100% chance of having a brown eyed child. What must the genotype of the prospective husband be to produce only brown eyed babies??
A. bb
B. Bb
C. BB
D. Both Bb and BB
[tex] \huge\boxed{ \boxed{ \underline \mathcal{Answer}}}[/tex]
The Required genotype of the Man should be BB in order to have only brown eyed offsprings.
Correct option - C. BB
_____________________________
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Why didn’t the greatest heart anatomist in history, Leonardo da Vinci, discover this simple technique that would prove that it was a pump?
Answer:
He found that the heart had four chambers and it connected the pulse in the wrist with the contraction of the left ventricle. He worked out that currents in the blood flow, created in the main aorta artery, help heart valves to close. And he suggested that arteries create a health risk if they fur up over a lifetime.
Explanation:
Leonardo da Vinci, being an anatomist, was limited by the technology and knowledge available during his time, which prevented him from discovering the simple technique that would prove the heart's pumping action.
Leonardo da Vinci lived during the Renaissance period (1452-1519), a time when scientific knowledge and understanding of anatomy were still in their early stages. While da Vinci made significant contributions to the field of anatomy, including detailed drawings and observations of the heart's structure, the concept of blood circulation.
The discovery of the heart's true function as a pump and the understanding of blood circulation came later in history, with the groundbreaking work of William Harvey in the 17th century. Harvey's detailed studies and experiments on the heart and blood vessels provided compelling evidence for the heart's role as a pump and the circulation of blood.
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Which process is absent in animal cells?
A.(making proteins)
B.(chemical reactions)
C.(respiration)
D.(photosynthesis)
The process that is absent from animal cells is photosynthesis. The correct option is D.
What are animal cells?Animal cells are present in animals, and they are of two types, prokaryotic and eukaryotic cells. These cells are different from plant cells as they do not contain a cell wall.
Plants are autotrophic organisms that do the process of photosynthesis to perform the chemical reaction to make food. As animal cells are heterotrophic, they do not perform photosynthesis, and they do not contain chloroplast, but chloroplast is present in plant cells.
All other processes like making protein, chemical reactions, and respiration. These processes are performed by both animals and plant cells. These are necessary for both plants and animals.
Thus, the correct option is D. photosynthesis.
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How and why do plants need to be able to respond to their environment?
Like all organisms, plants detect and respond to stimuli in their environment. Unlike animals, plants can't run, fly, or swim toward food or away from danger. They are usually rooted to the soil. Instead, a plant's primary means of response is to change how it is growing. hope it helps have a great day and I hope you pass:)