What is the keystone species

Answers

Answer 1

Answer:

a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically

Explanation:

Answer 2

Answer:a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.

Explanation:

The American Beaver (Castor canadensis) is one example of a keystone species in North America. In any arrangement or community, the “keystone” is considered one of the most vital parts. In a marine ecosystem, or any type of ecosystem, a keystone species is an organism that helps hold the system together.


Related Questions

What part of the cell determines the type and order of the amino acids that make up a protein?

Answers

Answer:

The gene, or sequence of DNA, ultimately determines the unique sequence of amino acids in each peptide chain. A change in nucleotide sequence of the gene's coding region may lead to a different amino acid being added to the growing polypeptide chain, causing a change in protein structure and therefore function.

The zika virus was first identified in Uganda in 1947. The virus is transmitted from person to person by a bite from a mosquito. It is commonly carried by the Aedes mosquito which is prevalent throughout Central Africa. The virus has more recently spread to the Americas (South, Central, and now North) and is expected to spread to Europe. There is a concern that the virus may reach epidemic proportions. Zika virus is related to yellow and dengue fever. Common symptoms are low grade fever and a distinctive skin rash and other symptoms include vomiting, headache, and muscle and/or joint pain. Pregnant women should avoid traveling to areas known to have zika virus present because the virus is known to cause microcephaly and developmental difficulties related to the central nervous system. Based on the paragraph above, class discussions, and other VALID (be careful with your selection of e-materials! CDC – Center for Disease Control is a good place to start) sources of information please answer the following questions.
1. State a reason why the virus has spread to the Americas and likely to spread to Europe.
2. Define the term microcephaly.
3. What bones of the fetal skull would be affected by zika? Specifically, what area of the CNS is not fully developed in microcephalic individuals.

Answers

Answer:

1. It is a highly contagious disease transmitted from person to person and thereby it is expected that infected persons carried the virus to America  

2. Microcephaly is a serious birth defect where a baby’s head is much smaller than expected.

3. Occipital bone. CNS malformations: ventriculomegaly, parenchymal and periventricular calcifications and cortical migration anomalies

Explanation:

The Zika virus (Flaviviridae) causes a contagious disease and it is transmitted by Aedes mosquitoes, which are also the main vectors of the dengue virus. Microcephaly is a condition where the baby’s brain has not developed properly during pregnancy, and it has been shown that this birth defect is associated with the Zika virus. During 2015 in Brazil, the incidence of infants with microcephaly born from mothers that contracted this disease during pregnancy was higher, thereby suggesting an association between both conditions. Baby health problems associated with Zika infection include microcephaly (skull partially collapsed), joints with limited motion, etc.

Select the correct answer.
Jayden is taking a test. He has to write why scientists support the theory that life began near hydrothermal vents in the ocean. Which point should he include in his answer?
A.
Hydrothermal vents were closest to ocean surface, and therefore could receive oxygen.
B.
Oceans were dry and only had water near the hydrothermal vents in the earlier ages.
C.
Even today, all life forms are first born near hydrothermal vents and they later migrate to land.
D.
Fossils of archeabacteria, which are early common ancestors, were found near hydrothermal vents.

Answers

Answer:

The answer is; D

Archaebacteria are early life forms on earth. They utilized the process of chemosynthesis to make organic molecules from inorganic molecules and for energy. The word archae means ‘ancient’ life forms. These single-celled organisms evolved around sulfur-rich environments of the hydrothermal vents.

Answer:

D

Explanation:

Other Questions
Why is the nitrogen cycle considered a closed system? the difference between prokaryotic and eukaryotic gene regulation Please answer this.. please Plz help Plz helpElla played a math game and had the five cards shown.7 0 -4 -10Her score was the sum of the numbers on these five cards. What was Ellas score?3235Not here Help pls idk pls pls and thank you I NEED HELP ITS URGENT!!! I WILL MARK BRAINLIST!! LOOK AT THE IMAGE ABOVE AND DO BOTH PROBLEMS BY SHOWING THE ENTIRE WORK!!Do NOT answer if you DONT know. This could lead to serious consequences. Ex: idk could lead to the monitor marking you to loose points. PLEASE HELP How did the trial of Peter Zenger in 1733 demonstrate the need for an impartial court system? Which narrative point of view is used in this excerpt from The Lilys Quest by Nathaniel Hawthorne?So one breezy and cloudless afternoon Adam Forrester and Lilias Fay set out upon a ramble over the wide estate which they were to possess together, seeking a proper site for their temple of happiness. They were themselves a fair and happy spectacle, fit priest and priestess for such a shrine, although, making poetry of the pretty name of Lilias, Adam Forrester was wont to call her "Lily" because her form was as fragile and her cheek almost as pale. As they passed hand in hand down the avenue of drooping elms that led from the portal of Lilias Fay's paternal mansion they seemed to glance like winged creatures through the strips of sunshine, and to scatter brightness where the deep shadows fell. Melanie had 3 pounds of dried fruit. She packed the dried fruit into bags of 3/8 pound each. How many bags of dry fruit does she pack? What is the measure of angle x? 62" X Why should someone seek professional help for issues related to mental health?A) to get out of classB) to develop dependence on othersC) to prevent thoughts of hopelessness D) to become friends with a professional what is a unit of electrical flow called Find the distance between each pair of points in the coordinate plane.(3,-2) and (2,-1) Deandre pays $15.20 for a pack of 8 towels.Find the unit price in dollars per towel.If necessary, round your answer to the nearest cent.Please help Workers have been down the street installing two blinking red lights in front of the fire station. The two lights are always turned on at the same time. Both lights blink as they are turned on. One lights blinks after every 8 seconds. The other light blinks every 22 seconds. After how many seconds will they blink together again? A country, called Simpleland, has a language with a small vocabulary of just the, on, and, go, round, bus, and wheels. For a word count vector with indices ordered as the words appear above, what is the word count vector for a document that simply says the wheels on the bus go round and round.Please enter the vector of counts as follows: If the counts were ["the"=1, on=3, "and"=2, "go"=1, "round"=2, "bus"=1, "wheels"=1], enter 1321211.1 point The discharge of chromate ions (CrO42-) to sewers or natural waters is of concern because of both its ecological impacts and its effects on human health if the receiving water is later used as a drinking water source. One way in which chromate can be removed from solution is by its reaction with ferrous ions (Fe2+) to form a mixture of chromic hydroxide and ferric hydroxide solids [Cr(OH)3(s) and Fe(OH)3(s), respectively], which can then be filtered out of the water. The overall reaction can be represented as CrO42- + 3 Fe2+ + 8 H2O --> Cr(OH)3(s) + 3 Fe(OH)3(s) + 4 H+How much particulate matter would be generated daily by this process at a facility that treats 60 m3/h of a waste stream containing 4.0 mg/L Cr, if the treatment reduces the Cr concentration enough to meet a discharge limit of 0.1 mg/L? The grandpapa car traffic function is shown check although following statements are true of the function An).is anything that increases the chances of an unhealthy outcome.A. risk factorB. action planC. health continuumD. habit In "A Warning Against Passion," what does Bront say can happen if a woman loves too much?a.she will go insanec.the man can begin to neglect herb.she will appear to be weakd.none of these