Answers
Answer: A keystone species.
A sea otter is critical to the functioning of the ecosystem in which it lives. It affects the survival and abundance of many species because it is a keystone species. Option a is the correct answer.
What is an ecosystem?Living and nonliving organisms coexist in an ecosystem. Living are called "biotic" factors, while non-living are called "abiotic." Different ecosystems have different biotic organisms, such as animals and plants. In some ecosystems, a particular species has more importance. They are called keystone species.
This species is key to the functioning of the ecosystem. Without the keystone species, the ecosystem would not function well. The statement's example is the role of the sea otter.
Some species are found in abundance in some ecosystem. If they are hunted for their resources, their numbers will decline. This type of species is called an endangered species.
Hence, the sea otter is a keystone species. It maintains the survival of many other species in the ecosystem. Option a is correct.
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Related Questions
Mendel demonstrated which of the following about inherited traits? Check all that apply.
certain traits are more likely to appear than their alternatives.
some traits show blending inheritance.
traits segregate among the offspring of a cross.
traits can be hidden in some generations, but subsequently reappear unchanged in future
generations.
parents that both have the same trait can have offspring with an alternative trait.
Answers
Answer:
The correct answer would be -
certain traits are more likely to appear than their alternatives.
traits segregate among the offspring of a cross.
traits can be hidden in some generations, but subsequently, reappear unchanged in future generations.
parents that both have the same trait can have offspring with an alternative trait.
Explanation:
Mendel is known as the father of genetics for his tremendous work in the field of genetics by performing experiments on the pea plants which contribute to the make the law of inheritance. According to all three laws of inheritance and experiments performed by Mendel, he demonstrated inheritance patterns in the traits or the alleles inherited to the next generation.
Certain traits that are dominant are more likely to appear than their recessive alternatives. Trait segregates when gametes form during the cross. In heterozygous cases, some traits can be hidden but can reappear unchanged in future generations.
FIRST CORRECT GETS BRAINLIEST
Just ask 3-5 questions about climate change
Answers
Is the Sun causing global warming?
Is there a possible way to stop climate change?
Do scientists agree on climate change?
If there is a possible way to stop climate change, why don't we change it?
What do volcanoes have to do with climate change?
Answer:
What is the greenhouse effect?
Is it too late to prevent climate change?
What causes climate change?
Has the earth continued to warm since 1998?
Is it the ozone hole that causes climate change?
1 pts
Use your table of the genetic code to determine the amino acid that would be attached to the 3' end of
this molecule.
Answers
Answer:
AUG start codon methionine
Explanation:
Chef Brandi suffered a bum on her arm when a kettle of spaghetti sauce exploded. The doctor, using a forceps, pulls on a hair within the
area that is burned. The hair easily pulls out. What degree of burn did the patient have?
Answers
Answer:
2degree burn
Explanation:
it has moist layer of skin and it affects the outer and middle layers of your skin the hair is present in human body . hope you find it useful
Explain the three mechanism for how activated transcription factors can stimulate transcription through modification of the chromatin structure.
Answers
What are your top 3 favorite lifeforms and why? What adaptations help these living things to survive in their environment?
please help
I will give brainliest for the best answer
Answers
Answer:
so it's saying what are your favorite animals or plants or living things and how do they survive
hi!! here's ur answer!!
my top 3 favourite lifeforms are- polar bears,tigers and ducks. :D
1) polar bears- are well adapted for survival in the Arctic. Their adaptations include: a white appearance - as camouflage from prey on the snow and ice. thick layers of fat and fur - for insulation against the cold.
2) tigers- striped coat helps them blend in well with the sunlight filtering through the treetops to the jungle floor. The tiger's seamless camouflage to their surroundings is enhanced because the striping also helps break up their body shape, making them difficult to detect for unsuspecting prey.
3) ducks- possess an oily coating that keeps water from settling in their feathers, helping them in staying dry and keeping themselves warm. Their webbed feet, designed like paddles, provide more surface area to push against the water and help them swim.
hope it helps:)
Which statement best describes the hydrosphere?
A it includes only the water on the Earth's surface
B It includes only freshwater on the Earth's surface
C It includes water on the Earth's surface, underground, and in the atmosphere
D It includes fresh and salt water on the Earth's surface and underground
Answers
Answer: C
Explanation:
I have no idea what the answer is but ill give points for CORRECT answers only!!!
Answers
Answer:
A
Explanation:
What is the answer to this question 11
Answers
Answer:
11 = multicellular ; autotroph
option D
hope it helps
Multicellular, and autotroph
Why does DNA make a copy of itself during cell division?
A. To make sure that the two new cells can make the same proteins
as the parent cell
B. To make sure that the two new cells have slightly different genetic
codes
C. To carry amino acids out of the nucleus
D. To expose the genes that code for the needed proteins HELP FAST
Answers
Answer:
its A
Explanation:
I took the test
Identify an organism that the giant tortoise competes with
Answers
Answer:
Threats
Explanation:
The giant tortoise is threatened by introduced species to the islands, such as dogs and cats which prey on young tortoises, and cattle which compete for grazing vegetation.
Can you breathe with a closed mouth? If yes how does air pass in?
Answers
Answer:
yes, through your nose
Explanation:
yes
Surface water currents are important because they_________
Answers
Answer:
Surface currents are extremely important because they distribute heat around the planet and are a major factor influencing climate around the globe.
Explanation:
Ocean currents flow like vast rivers, sweeping along predictable paths. Some ocean currents flow at the surface; others flow deep within water. Some currents flow for short distances; others cross entire ocean basins and even circle the globe.
By moving heat from the equator toward the poles, ocean currents play an important role in controlling the climate. Ocean currents are also critically important to sea life. They carry nutrients and food to organisms that live permanently attached in one place, and carry reproductive cells and ocean life to new places.Major surface ocean currents in the open ocean, however, are set in motion by the wind, which drags on the surface of the water as it blows. The water starts flowing in the same direction as the wind.
But currents do not simply track the wind. Other things, including the shape of the coastline and the seafloor, and most importantly the rotation of the Earth, influence the path of surface currents.
What is the main source of energy for the world
Answers
I need this ASAP please i might fail
Answers
Answer= substitution
HELLLLPPPPPPPPPPPLEASEEE
Jessica learns that two organisms are members of the same class. Which can she also infer is true?
The organisms are members of the same order.
The organisms are members of the same family.
The organisms are members of the same genus.
The organisms are members of the same phylum.
Answers
answer:
The organisms are members of the same family.
this is the answer.
The tall wetland plant, purple loosestrife, was brought from Europe to the
United States in the early 1800s as a garden plant. The plant's growth is now
so widespread across the United States that it is crowding out a number of
native plants. This situation is an example of
Answers
Answer: an unintended effect of adding a species to an ecosystem.
Which of the following best describes a precipitate?
A measure of mass per unit of volume
A solid separated from a solution
A form of weather
A clear indication of a physical change
Answers
Answer:
In chimica, un precipitato è un solido insolubile che emerge da una soluzione liquida. L'emergenza del solido insolubile dalla soluzione è chiamata precipitazione. Spesso il precipitato emerge come una sospensione. I precipitati possono formarsi quando due sali solubili reagiscono in soluzione per formare uno o più prodotti insolubili.
Explanation:
A solid separated from a solution best describes a precipitate. So, the correct option is B.
What is Precipitate?Precipitation is the process of formation of a solid substance in a solution, either by physical mixing of low-solubility chemicals or by a chemical reaction of two or more compounds. Precipitate refers to the solid that eventually forms as a result. A solid that separates from a solution during a chemical reaction is known as a precipitate.
When two or more compounds are combined, they react to form an insoluble product, which is how it is formed. A precipitate may take the form of a suspension in solution or a solid that settles to the bottom of a solution. It can be removed from a liquid using a number of techniques, including filtration and centrifugation. Many chemical reactions require precipitates, which are often used to separate, purify, or identify different compounds.
Therefore, the correct option is B.
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If a certain species of brown bird is crossed with a white one all the offspring are tan. If these offspring were crossed and produced 20 individuals in the f2 generation what colors and ratios would be expected?
Answers
Answer:
In the f2 generation:
10 of offspring would be tan (ratio form - 10:20)
5 of offspring would be white (ratio form - 5:20)
5 of offspring would be brown (ratio form - 5:20)
From the time a baby is born, what is she or he eager to do?
A. Explore her world and interact with others
B. Smile at her parents and primary caregivers
C. Sleep the majority of the time
D. Play with her parents, primary caregivers, and toys
Answers
Answer:
D. Play with her parents, primary caregivers, and toys
Answer:
D. Play with her parents, primary caregivers, and toys
Explanation:
What could explain the curve in this population growth graph?an unlimited food supply
a natural disaster
a population crash
a reduction in predators
Answers
Answer:D
Explanation:
The curve in this population growth graph indicates an unlimited food supply, which is the first option, as an unlimited food supply could explain a steady or exponential increase in population size without a curve.
What is population growth?Population growth is a measure of the change in population size over time, and it is affected by many factors, including the availability of resources, predation, disease, natural disasters, and human activities. The shape of a population growth graph can provide important insights into the underlying factors that are influencing the population. An unlimited food supply would allow a population to grow without any limitations. In this scenario, the population would experience a steady or exponential increase in size, and the graph would show a straight line or a curve that rises steeply. However, even with unlimited food, other factors, such as competition for resources, predation, or disease, may eventually limit the population's growth.
Hence, the curve in this population growth graph indicates an unlimited food supply, which is the first option.
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Mutations rII1 and rII2 are known to fall into the rIIA and rIIB cistrons (genes) respectively. Cells of E. coli B are infected simultaneously with phage strains rII1 and rII2 at a high moi. The progeny phage are collected and used to infect cells of E. coli K. This infection is also carried out at a high m.o.i., and the resulting phage are collected. These progeny are diluted and plated on both E. coli B and E. coli K. Do you expect more plaques on strain B, on strain K, an equal amount on both or is it impossible to tell?
A. E. coli B
B. E. coli K
C. Equal on both
D. Can't tell
Answers
Answer:
the answer is A. E. coli B
Explanation:
The multiplicity of infection (MOI) refers to the ratio between the numbers of viruses used to infect E. coli cells and the numbers of these E. coli cells. Benzer carried out several experiments in order to define the gene in regard to function. Benzer observed that E. coli strains with point mutations could be classified into two (2) complementary classes regarding coinfection using the restrictive strain as the host. With regard to his experiments, Benzer observed that rII1 and rII2 mutants (rapid lysis mutants) are complementary when they produce progeny after coinfect E. coli K (where neither mutant can lyse the host by itself). The rII group of mutants studied by Benzer does not produce plaques on E. coli K strains that carry phage λ (lysogenic for λ), but they produce plaques on E. coli B strains. This study showed that rIIA and rIIB are different genes and/or cistrons in the rII region.
What is the complementary strand of DNA for the polymer ATTCGCAT?
O TAACGCTA
O TAAGCGTA
O ATTCGCAT
O CGGATACG
Answers
Answer:
TAAGCGTA
Explanation:
Choose the correct answer.
The process of removing all the unwanted matter from sheared wool of an animals called ?
a) Carding
b) Grading
c) Scouring
d) Drying
2.which of the following leaves do Bombyx mori L silkworms feed on ?
a) mulberry
b) neem
c)mapple
d)all of these
Answers
Answer:
answer 1 shearing
answer 2 mulberry
After plants first moved to land, what happened?
A.
Plants evolved into multicellular organisms.
B.
Adaptive radiation formed many new land plant species.
C.
Photosynthesis evolved as a way to produce energy.
D.
They adapted by developing cuticles.
Answers
Answer: B. Adaptive radiation formed many new land plant species
Explanation:
After plant first moved to land adaptive radiation formed many new land species
What is adaptive radiation?"Adaptive radiation is a process in which organisms diversify rapidly from an ancestral species into new species due to change in the environment."The species adapt themselves to varied habitat in order to survive and the number of species increases.What is species?"It is a group of living organisms consisting of similar individuals capable of exchanging genes or interbreeding."Hence, the correct option is B. Adaptive radiation formed many new land plant species.
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Explore the three different types of ground tissue cells in detail and complete the chart below.
Answers
Answer:
parenchyma have primary cell walls (thin) and are unspecialized and metabolically active (photosynthesis, respiration)
collenchyma have primary cell walls (unevenly thick) which provide a level of structural support in areas of high growth, they are alive so have a protoplast
sclerenchyma have secondary cell walls which means they have lignin and are thick, they are functionally dead at maturity so provide support in areas that are done growing and are involved in transport of water
Explanation:
label the following parts of an animal cell
Answers
cell memvrabe
cell wall
cytoplasm
nucleus
mitochondria
Lysisomes
Ribosomes
Nucleoid
How do the vrg and drg control and regulate the respiratory rate?
Answers
Answer:
The ventral respiratory group (VRG) and the dorsal respiratory group (DRG) within the medullary rhythmicity area cooperate to establish the pattern for spontaneous ventilation and basal rate of ventilation which may be adjusted by impulses from related respiratory control centers in the pons; the ventral respiratory group (VRG) contains both inspiratory and expiratory neurons; the autorythmic inspiratory neurons stimulate the diaphragm and external intercostals for approximately 2 seconds to cause inspirations and then the antagonistic expiratory neurons fire for approximately 3 seconds to permit passive or stimulate active expirations; thereby inspiratory and expiratory neurons cooperate in a negative feedback control relationship, setting the basic rhythm of respiration (spontaneous ventilation, resting or tidal breathing (eupnea)); the dorsal respiratory group (DRG) neurons are involved in altering the pattern for ventilation in response to the physiological needs of the body for O2 and CO2 exchange and for blood acid-base balance; these neurons stimulate neurons in the ventral respiratory group (VRG) to achieve those effects; they are responsive to sensory information from chemoreceptors and mechanoreceptors.
Explanation:
4.
Which of the following is not a negative impact of invasive species?
A.
There is decreased competition with native species.
B.
Native species are crowded out or replaced.
C.
The carrying capacity of the habitat is decreased.
D.
There is increased competition with native species
Answers
Good luck!
out of 1200 students,960 in science,852in mathematics,120 failed in both subject and 84 did not appear in an examination.find the number of students who passed in both subject
Answers
Answer:
996
Explanation:
first we can take 84 out of the total of 1200 because they didnt even take a exam and then we can take 120 out of that because those are the students who failed which leaves us with 996 students who passed both subjects.