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Romashka [77]
3 years ago
7

SERIOUSLY I NEED HELP I AM TAKING A QUIZ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Biology
2 answers:
Setler [38]3 years ago
8 0

c is the correct answer

dem82 [27]3 years ago
3 0

Answer:

cardiac

Explanation:

An electrical stimulus is generated by the sinus node (also called the sinoatrial node, or SA node). This is a small mass of specialized tissue located in the right upper chamber (atria) of the heart. The sinus node generates an electrical stimulus regularly, 60 to 100 times per minute under normal conditions.

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Assuming that Alexa has been unfaithful, what is the possible genotype of the man who is Ryan’s biological father?
nasty-shy [4]

Answer: Bb/bb (let's take letter B this time, just for no reason since it does not matter :) )

Explanation:

if the ryan's genotype is Bb, alexa's genoype is BB, then the genotype ryan's biological father is either Bb, or bb

punnet square evidence (option 1):          

     B    b

B  BB   Bb

B  BB   Bb

punnet square evidence (option 2):

    b     b

B  Bb    Bb

B  Bb    Bb

5 0
3 years ago
Answers questions . why are estuaries, such as the pamlico estuary, so important? . how would you be able to determine from whe
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We can be able to determine this concept by basing our facts on two concepts. Nutrient Influx, upon reaching the estuarian ecosystem, the nutrients in the presence of sunlight undergoes photosynthesis and produce phytoplanktons. Basically, where there is sunlight, we can assume there is a nutrient influx. Presence of Phytoplanktons will in turn help attract animals such as fish. Also, another contribution of nutrient influx is manure produced by the animals

Sewage treatment plans and fertilizer runoff. Auto emissions of nitrogen, fertilizers applied on golf courses and home gardens can contribute. Some plankton species may produce toxins that might cause these outbreaks

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4 years ago
If the weather becomes stormy for a short time and then becomes colder, which type of front has most likely passed?
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The warm front has passed. YOU'RE WELCOME! 
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What are the unique properties of the echinoderms within higher invertebrates?
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