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Katen [24]
3 years ago
13

What proportion of all species that ever lived has become extinct?

Biology
1 answer:
yan [13]3 years ago
4 0
More than 99 percent of all species, amounting to over five billion species, that ever lived on Earth are estimated to be extinct. Estimates on the number of Earth's current species range from 10 million to 14 million, of which about 1.2 million have been documented and over 86 percent have not yet been described. 
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In a biological reaction, succinate dehydrogenase catalyzes the conversion of succinate to fumarate. The reaction is inhibited b
Doss [256]

Answer:

C. Succinate is the substrate, and fumarate is the product.

Explanation:

Succinate is the substrate, and fumarate is the product in the reaction.

8 0
3 years ago
a naturally occurring, in organic solid with a definite chemical composition and an orderly arrangement of atoms​
irina [24]

Rock Mineral

Explanation:

Rock minerals are naturally occurring inorganic solids with a definite chemical composition and an orderly arrangement of atoms.

Minerals forms as a result of combination of different elements.

The minerals makes up rocks. A rock is an aggregate of minerals.

  • They are naturally occurring: minerals are not formed in the laboratory through a synthetic process.
  • The are inorganic: not formed by living organisms.
  • Solids: minerals are in the solid phase of matter
  • definite chemical composition:  they are compounds and not mixtures.
  • Orderly arrangement of atoms: they are crystalline

learn more:

Rocks brainly.com/question/2817889

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8 0
4 years ago
Scientific names are understood by all scientists because the names are written in
Nuetrik [128]

Answer:

A. binomial system

B. According to taxon

Explanation:

A. The binomial system of nomenclature brings order to a chaotic world of common names. No two kinds of animals have the same binomial name, and every animal has only one correct name, as required by the International Code of Zoological Nomenclature, thereby avoiding the confusion that common names cause.

B. Any grouping of animals that shares a particular set of characteristics forms an assemblage called a taxon. For example, a housefly (<u>Musca</u> <u>domestica</u>), although obviously unique, shares certain characteristics with other flies (the most important of these being a single pair of wings). Based on these similarities, all true flies form a logical, more inclusive taxon. Further, all true flies share certain characteristics with bees, butter-flies, and beetles. Thus, these animals form an even more inclusive taxon. They are all insects.

6 0
3 years ago
What mutation would cause a protein to be shorter then normal?
DochEvi [55]

Mutations occur when a premature nonsense or stop codon is introduced in the DNA sequence. When the mutated sequence is translated into a protein, the resulting protein is incomplete and shorter than normal. Consequently, most nonsense mutations result in nonfunctional proteins.

5 0
3 years ago
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1) which one of the following is a defining characteristic of animals but not of plants? a) autotrophic b) heterotrophic c) euka
borishaifa [10]

Answer: B. Heterotrophic

8 0
2 years ago
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