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Mekhanik [1.2K]
3 years ago
8

When an earthworm moves what structures allow it to hold on to the soil

Biology
1 answer:
lina2011 [118]3 years ago
6 0
Cl itellum secrets the mucus which forms the cocoon needed to hold<span> them to the soil. hope this helped</span>
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b. In 1979, the estimated elephant population was 1.3 million and in 2007 it was 640,000. By approximately what percentage did t
saveliy_v [14]

Answer:

The initial amount, 1.3 million = 1,300,000 is the 100%.

now, 640,000 is a given percentage (lower than 100%) of that.

How we can find it?

suppose that 640,000 represents an x%.

Then we have that the quotient between the actual quantities and the percentages must be the same

(640,000/1,300,000) = x%/100%

x% = (640,000/1,300,000)*100% = 49.23%

Then the percentage declined is:

100% - 49.23% = 50.77%

The other question can not be answered with the given information.

4 0
3 years ago
Long-term use of certain antipsychotic drugs can produce involuntary movements of the facial muscles, tongue, and limbs. this me
goblinko [34]
The condition is known as tardive dyskinesia.
4 0
3 years ago
Male northern elephant seals (Mirounga angustirostris) compete with one another for territories along the beach. Males defend th
Ugo [173]

Answer:

Option C

Explanation:

In elephant seals, the male arrive the beach first and start establishing its territory. Once their territory is established female elephant seals starts arriving at the beach and prefer mating with the male who can defend their territory or females in his territory from other males. All females in the territory of specific male mate with the male give birth to their pups and after staying for few months move back into the water.

hence, option C is correct

6 0
3 years ago
Why should we be concerned about the disappearance of phytoplankton in the oceans
Setler [38]

Answer:

The loss of phytoplankton is a huge problem for marine food chains, says Worm, because every creature in the ocean either eats phytoplankton or eats other organisms that depend on it.

Hope this helps!

7 0
3 years ago
A segmented viral genome
Fynjy0 [20]
<h2>The correct option is (C)</h2>

Explanation:

  • A VIRUS consist of RNA or DNA Genes and are therfore known as RNA Virus or DNA Virus
  • RNA genomes is seen in majority of Viruses. Bacteriophages possess double stranded DNA genomes whereas Plant viruses possess single stranded RNA genomes
  • Viral genomes are linear, as we see in the adenoviruses and circular as we see in the polyomaviruses
  • The shape of the genome is not determined by the type of nucleic acid present in it.
  • The genome is often divided into separate parts, in RNA and DNA viruses, and thus we called as segmented.

4 0
3 years ago
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