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meriva
2 years ago
5

Which of the following is NOT a process farmers used long ago to increase the food supply?

Biology
1 answer:
Elena L [17]2 years ago
7 0

Answer:

b. diverted streams for irrigation

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No 2 people have the same DNA except for
Mariana [72]
Identical twins is the correct answer. As they both come from the same egg that has split into two.
However paternal twins are two different eggs and therefore have different dna.
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3 years ago
Choose the best explanation of the difference between evolution and natural selection. A. Natural selection is the idea that spe
katen-ka-za [31]

Answer:

Evolution is not the same as adaptation or natural selection. Natural selection is a mechanism, or cause, of evolution. Adaptations are physical or behavioral traits that make an organism better suited to its environment. Heritable variation comes from random mutations.

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3 years ago
What is a communicable disease chain? what steps can a nurse can take to break a link within the communicable disease chain?
Kaylis [27]
<span>A diseases may be classified as either communicable or non-communicable. Communicable diseases are caused by pathogens who inhabit a host, man (I'm not saying man is the only host or man is necessarily the final host; there could be many host) who in turn passes the disease to another. Pathogens are viral, bacterial, parasitic and fungal. There are several stages before the pathogen metamorphoses into a full-blown disease. The stages in which several events happen builds up before the pathogen affects the final host is called a communicable disease chain. There are six stages ( Pathogen, reservoir, portal of ext, mode of transmission, portal of entry and susceptible host) in the communicable disease chain but the step a nurse shouod take is 1. Destroy the second link (Reservoir) by thoroughly sanitizing the environment. Obviously, this is where the Pathogens live. If the reservoir is taken care of; there's no way they could infect the host.</span>
6 0
3 years ago
What is the monomer of a nucleic acid?
nlexa [21]

Answer:

Is D

Explanation:

Nucleic acids are giant biomolecules made of monomers called nucleotides. Nucleotides have three components: pentose sugar (5-carbon sugar), phosphate group, and nitrogenous base.

5 0
3 years ago
Read 2 more answers
Fraternal twins originate from the fertilization of _________
lara31 [8.8K]

Answer:

<u>Two eggs</u>

Explanation:

Fraternal twins originate from the fertilization of two eggs. Fraternal twins are also termed as dizygotic twins which means "two cells". Every two twins in a set of three are dizygotic or fraternal. The babies arising  by this phenomenon are not identical and can be of different sexes. Even the sperm fertilizing the two eggs in this phenomenon are seperate. Fraternal twins even do not share  the same placenta, each of the them makes their own placenta.

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