1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kkurt [141]
3 years ago
15

Which of the following describe ways septic tanks potentially contaminate drinking water?

Biology
2 answers:
olganol [36]3 years ago
5 0

Answer:

| and ||

Explanation:

Alexandra [31]3 years ago
4 0

Answer:

lll and ll

Explanation:

You might be interested in
Why are populations, rather than individuals, the units of evolution?
dimulka [17.4K]

Explanation:

The unit of evolution is the population. A population consists of organisms of the same species that live in the same area. In terms of evolution, the population is assumed to be a relatively closed group. This means that most mating takes place within the population.

3 0
3 years ago
A species of fish evolved over thousands of years to have gills that allowed the fish to swim deep in the sea. What’s the effect
SIZIF [17.4K]

Answer:

Likewise, competition for food among deep-water fish that eat the same types of food will .

Explanation:

Natural selection will condemn all deep-sea fish to the same environment that conditions them, those that cannot develop gills will be exposed to extinction, this refers to the theory of the evolution of the fittest by Charles Darwin.

6 0
3 years ago
Read 2 more answers
Some genes are important enough to be called "molecular switch" or "master" genes. What is the purpose of these genes?
trapecia [35]

Answer:

Genes called "molecular switch" or master genes have the purpose of control when other genes are expressed (option A).

Explanation:

Master gene is so named because it has the function of controlling the behavior of other genes, organizing their functions and regulating when they can be expressed.

The name of molecular switch is synonymous with the master gene, since its activation determines the genetic regulation necessary to establish cell differentiation and even the determination of the sex of some species.

The other options are not correct because:

<em>     B. Master genes do not </em><u><em>determine the organization of the genome</em></u><em> .</em>

<em>     C. </em><u><em>Regulation of cell metabolism</em></u><em> depends of substances as hormones and enzymes. </em>

<em>     D. </em><u><em>The rate of translation</em></u><em> does not depend on the activity of master genes.</em>

4 0
2 years ago
Explain how nerves signal muscles fibers to contrast?
laila [671]

Answer:

By action potential nerve contract the muscle

Explanation:

The muscle contract when the nervous system sends action potential to the muscle. So the nervous system delivers signal to muscle, the first signal reaches the neuromuscular junction. The signals are passed by a chemical messenger called neurotransmitter release by motor neurons, the chemicals bring reaction and shorten the muscle fibre. When neurotransmitter are absent or reduce in concentration the process reverse and muscle relax again.

7 0
3 years ago
Can anyone answer all of these. Thank You!
andrey2020 [161]

UM- LFJKAHFAJF SIS WANTS US TO ANSWER ALL OF THEM SKSJSJJS

8 0
3 years ago
Other questions:
  • How do you think the change in
    8·1 answer
  • Shallow groove on the surface of the cortex is called a
    7·1 answer
  • Tissue found in the ____________ that contains ____________ cells is called nervous tissue.
    12·1 answer
  • You find a fossil in your backyard. Twelve percent of the Carbon 14 isotope is remaining. How old is the fossil?
    15·1 answer
  • 1) The molecule that serves as the major source of readily available fuel for neurons and blood cells is ________.
    15·1 answer
  • What are the products of step 1 of the hydrogen fusion process in the Sun? Check all that apply.
    7·2 answers
  • Three types of _____ tissue are skeletal, smooth, and cardiac.
    8·2 answers
  • To which sub-kingdom does paramecium belong to? Please give a reason for your answer.
    11·1 answer
  • Regeneration is a mechanism for:<br> A: Movement<br> B: Communication<br> C: Defense<br> D: Healing
    8·2 answers
  • In some people, substances such as peanuts, eggs, and milk cause an immune response. This response to usually harmless substance
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!