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Ann [662]
3 years ago
13

Which phrase describes a keystone species?

Biology
2 answers:
iVinArrow [24]3 years ago
6 0

A for you'res but for mine the answer was


Its absence would affect many organisms in the community

Drupady [299]3 years ago
3 0

The correct answer is option A

A key stone species is the most crucial part of an ecosystem and without keystone species all the food webs with in an ecosystems or its surrounding niche remains incomplete. These species may not be the most populous or powerful but are definitely important for the survival of all other species in the ecosystem. In option A, the species is considered important as it has a positive impact on all species thus in its absence the health of all species would be adversely impacted.  

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Que es la estructura celular?
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Answer:

La célula es una estructura constituida por tres elementos básicos: membrana plasmática, citoplasma y material genético (ADN). Las células tienen la capacidad de realizar las tres funciones vitales: nutrición, relación y reproducción (ver t13). La forma de las células está determinada básicamente por su función.

3 0
4 years ago
Viral chromosomes exist in a variety of conformations and can be made up of ________. Viral chromosomes exist in a variety of co
Molodets [167]

Answer:

The correct answer is DNA or RNA. Viral chromosomes exist in a variety of conformations and can be made up of <u>DNA or RNA</u>

Explanation:

The hereditary material of viruses is organized into chromosomes of different types. From the genetic point of view, viruses can be classified into DNA or RNA viruses, double helix or single helix, and circular or linear, that is, viral chromosomes are linear or circular molecules of DNA or RNA. Viruses can be classified according to the type of organism they parasitize in: Bacteriophages or phages, animal viruses and plant-type viruses. Viral chromosomes are also subject to the recombination process, this happens when an individual cell is infected simultaneously by two mutant strains of a virus.

7 0
3 years ago
The average 70 kg (150 lb) being has 5.5 L of blood (1.05 g/mL). How many 1 oz drinks of 20% alcohol by volume (40 proof) must b
AlekseyPX

Answer:

The total blood given is 5.5 liters

Thus, total alcohol needed for BAC (blood alcohol content) to exceed 0.1 gram per 100 ml will be 0.1/100 × 5500 = 5.5 grams alcohol.

1 oz = 28.3 grams

28.3 gram water = 28.3 ml

It has 20 percent alcohol by volume,

Therefore, alcohol in one drink will be:

20/100 × 28.3

= 5.66 ml

= 5.66 × 0.79 (density of ethanol)

= 4.47 gram

Thus, no of drinks will be 5.5 g / 4.47 g = 1.2

Hence, 1.2 drinks will make the BAC to exceed 0.1 g / 100 ml in the blood.

4 0
3 years ago
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The answer is A) intermediate filaments

Hope this helps!

-Payshence xoxo
4 0
3 years ago
Read 2 more answers
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5 0
3 years ago
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