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kifflom [539]
3 years ago
14

Aquifers are _______. a. structures used to transport water from city to city b. created through evapotranspiration c. densely p

acked snow close to becoming glaciers d. layers of porous rock or sand Please select the best answer from the choices provided A B C D
Biology
2 answers:
Lana71 [14]3 years ago
6 0

Answer: D: Aquifers are layers of porous rock or sand.

Aquifers are layers of porous rock or sand.

Explanation:

Aquifers refer to underground layers of rock which are socked with water and can be brought to the surface by natural springs. It is layers of saturated rock through which water can easily move. Aquifers can be located at the ground surface or very deep underground where they cannot be accessed. They can also be very large. It can come in two forms which are confined and unconfined aquifers.

babymother [125]3 years ago
5 0

Answer: Aquifers are structures used to transport water from city to city

Explanation: Aqui or Aqua means water... the word fer looks life transfer or reminds me of the word transfer so the word Aquifer means to transfer water

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Which organism competes with the red foxes and the raccoons
goblinko [34]

Answer:

eagles or bears compete with them

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3 years ago
Name two scientific issues that involve ethics?
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I think two are stem cell research and cloning
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Which of the following cells shows the presence of a nucleus? A.)Prokaryotic cell B.)Eukaryotic cell C.)Both prokaryotic and euk
elena-s [515]
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3 0
3 years ago
Read 2 more answers
All species are either ____________ or ______________. Please choose the correct answer from the following choices, and then sel
pshichka [43]

Answer:

extant; extinct.

Explanation:

A species is a group of individuals that can interbreed to produce fertile and viable progeny. A species may be present on the earth and is surviving or may not be present now on the earth and have become extinct due to one or more reasons. Extant species are the species living on the earth in the present time while extinct species do not exist now. For instance, <em>Plateosaurus engelhardti</em> is a species of dinosaurs that survived on the earth during the Triassic period but does not exist now. On the other hand, <em>Homo sapiens, Apis indica</em> are some of the examples of the extant species that are surviving on the earth.

8 0
3 years ago
Tay–Sachs disease is an autosomal recessive disorder. Homozygous recessive individuals lack a key enzyme called hexosaminidase A
myrzilka [38]

Answer:

0.033

Explanation:

Tay–Sachs disease is an autosomal recessive disorder. The possible genotypes and phenotypes are:

  • TT = normal
  • Tt = carrier
  • tt = Tay-Sachs disease

I will use <em>p </em>to call the frequency of the dominant <em>T</em> allele, and <em>q</em> the frequency of the recessive <em>t</em> allele.

If the population is in equilibrium, the frequency of the tt genotype is q².

q^2 = 1/3600\\\\q=\sqrt{1/3600} \\\\q=1/60=0.017\\\\and\\p + q = 1\\p=1-q\\p=0.983

The frequency of the Tt genotype is 2pq.

2pq= 2*0.983*0.017\\2pq=0.033

The Tay–Sachs carrier frequency will be 0.033

6 0
3 years ago
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