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Tatiana [17]
3 years ago
7

What is the name of Earth’s innermost layer?

Biology
2 answers:
andriy [413]3 years ago
8 0

Answer:

A.) Core

Explanation:

Core definition: a central and often foundational part usually distinct from the enveloping part by a difference in nature.

IrinaVladis [17]3 years ago
7 0

Answer:

The correct answer is option A. core.

Explanation:

The core is the innermost layer of the earth. It is a very hot, dense center of the earth that is beneath the solid mantle and crust that are cold. It is a solid ball that has about a 3485-kilometer radius.

The core of the earth is very hot regions which are said to be because of radioactive decay of different elements.

Thus, the correct answer is option A.

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Organisms with traits that are well-suited to an environment tend to survive and reproduce at a greater rate than organisms that
nata0808 [166]
I guess 'natural selection '
6 0
3 years ago
Jessica's mother takes her to see her pediatrician, who refers her to a rheumatologist, a doctor who specializes in rheumatic di
beks73 [17]

Answer:

Diarthroses are freely movable joints.

Explanation:

Rheumatology may be defined as the branch of medicine that mainly deals with therapy and diagnosis of the rheumatic disease. The individual specialized in this field is known as rheumatologist.

Diarthroses joint is also known as synovial joint and lined in continuous with the periosteum of the joined bones. The synovial fluid is filled in the synovial joint. The synovial joints provide the free movable joints that allow abduction, extension and adduction of the body parts.

Thus, the correct answer is option (d).

6 0
3 years ago
Choose the true statement(s) that support(s) the endosymbiotic theory. To be marked correct, you'll need to select all true stat
horsena [70]

Answer:

a.Many mitochondrial genes resemble proteobacteria genes, while the genes in the chloroplast resemble genes found in some photosynthetic bacteria.

c.Mitochondria and chloroplasts both have their own circular DNA and 70S ribosomes that are similar to those found in bacteria.

d.Mitochondria and chloroplasts replicate by a process similar to mitosis.

Explanation:

Endosymbiotic theory states that mitochondria and chloroplast which are organelles of eukaryotic cells were once independently living micro-organisms but with due course of time eukaryotic cells engulfed them and they become an integral part of these eukaryotic cells.

The resemblance between mitochondrial genes with those of proteobacteria and chloroplast genes with photosynthetic bacteria strongly support endosymbiotic theory. Apart from this, the presence of their own DNA that too circular just like prokaryotic microbes and 70 S ribosomes also support this theory. Also just like prokaryotic cells, before cell division mitochondria and chloroplasts undergo replication by means of a process known as binary fission.

3 0
3 years ago
Bacteria from the soil absorb nitrogen from the air and convert it into ammonium. This is an example of _____.
True [87]
<span>Nitrogen fixation

This process creates organic compounds, including ammonium, that contribute to the growth of a plant in much the way fertilizer does. Many plants have evolved to facilitate nitrogen fixing bacteria in their roots as to promote production of these organic compounds when the soil quality is poor or lacking in these bacteria.</span>
5 0
2 years ago
Read 2 more answers
To be injured by an animal with poisonous spines, you must: Select one: Be within a radius of 3 m/10 ft, as most poisonous anima
Mama L [17]

To be injured by an animal with poisonous spines, you must: be the aggressor and touch the animal first.

<h3>What is the use of spines in animals?</h3>
  • Spines are hard, needle-like anatomical structures found in both vertebrate and invertebrate species.
  • The spines of most spiny mammals are modified hairs, with a spongy center covered in a thick, hard layer of keratin and a sharp tip.
  • Spines on an animal’s body help defend it.
  • They can be irritating or painful, or difficult to swallow.
  • Spines are also important tools for communication, shock absorption, and rain protection.
  • Animals like porcupine shoot their spines (quills) for defense. Some spines can also pass through gloves.
  • To prevent attacked by an animal with poisonous spines you must remain calm and observe your surroundings.

Learn about plant spines here:

brainly.com/question/823927

#SPJ4

7 0
2 years ago
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