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Dahasolnce [82]
4 years ago
5

Which phylum do Hydra belong to​

Biology
1 answer:
podryga [215]4 years ago
8 0

Answer:

Cnidaria

Explanation:

Hydra, genus of invertebrate freshwater animals of the class Hydrozoa (phylum Cnidaria).

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Plants are a source of ________.<br><br> food<br> fuel<br> medicine<br> all of the above
den301095 [7]

Answer:

Plants are a source of food, fuel and medicine.

Explanation:

In biology, plants are photosynthetic living beings without locomotive capacity whose cell walls are mainly composed of cellulose.

The importance of plants for humans is indisputable. Without them we could not live, since the plants participated in the composition of the gases present in the Earth's atmosphere and in the ecosystems, and are the primary source of food for heterotrophic organisms. In addition, plants have direct importance to man: as a source of food; as building materials, firewood, fuel and paper; as ornamental; as substances that worsen or improve health and therefore have medical importance; and as a consequence of the latter, as the raw material of the pharmaceutical industry.

7 0
4 years ago
Based on the cell theory, which of the following is true?
larisa86 [58]

Answer:

D. The cell is the basic unit of living things

Explanation:

8 0
3 years ago
What would happen if the PLATE TECTONICS stopped mid way of moving?
DerKrebs [107]
If the Plate Tectonics stopped moving <span>the continents would stay in place rather than moving slowly around the face of the earth. This would also cause volcanic activity and earthquakes.</span>
3 0
3 years ago
Pheromones are a special type of compound secreted by the females of many insect species to attract the males for mating. one ph
boyakko [2]
Molar mass of C is 12.01g/mol.
Molar mass of H is 1.01g/mol.
Molar mass of O is 16.00g/mol.

If we have 19 atoms of C, 38 atoms of H, and 1 atom of O, then we have:
19*12.01+38*1.01+1*16.00=282.57g/mol
282.57g/mol is the molar mass of the pheromone molecule.

Supposing that "<span>1.8 10-12 g" is 1.8*10^(-12)g then, this quantity of pheromones, shoud be divided by the molar mass of the pheromone molecule:
1.8*10^(-12)/282.57g/mol=6.37*10^(-15)moles

Using now Avogadro's number of molecules in 1mol (6.02*10^(23)) it is possible to know how many molecules are there in this pheromone quantity.
</span>6.02*10^(23)/6.37*10^(-15)=9.45*10^(37)molecules

So, in this quantity of the pheromone there are approximately 9.45*10^(37)molecules of it.
5 0
3 years ago
Texting about routine or mundane topics can help build relational intimacy in dating couples.
kompoz [17]

Given what we know, we can confirm that text about routine or mundane topics does in fact help build relational intimacy in dating couples.

<h3>What is relational intimacy?</h3>
  • This is an emotional form of intimacy.
  • It involves proper communication and trust.
  • It entails the trust to be transparent with one another, which includes sharing secrets and details about one's life.

Therefore, we can confirm that texting about routine or mundane topics can help build relational intimacy in dating couples, given that they will be more likely to share secrets with one another and have healthy communication.

To learn more about intimacy visit:
brainly.com/question/25664183?referrer=searchResults

8 0
3 years ago
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