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olasank [31]
2 years ago
14

PLEASE HELP

Biology
1 answer:
icang [17]2 years ago
3 0

Answer:

B

Explanation:

I’m smart dude

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The diagram shows an energy pyramid.
stellarik [79]

Answer:

D: All levels contain the same amount of energy

Explanation:

This is due to how the number of animals also increase as the energy pyramid level decreases.

Hope it helps!

6 0
2 years ago
Question 7: What might be some implications of Robert Hazen’s experiments
Angelina_Jolie [31]

Answer:

Robert Hazen’s studied enviromental and biological processes that might have been critical for life, and also for the formation of approximately two-thirds of Earth's mineral species (see Hazen et al., 2008; Gonzalez & Richards 2020) .

Explanation:

Hazen provided evidence about how first organic molecules were generated on the primitive earth millions of years ago. He observed that high-pressure hydrothermal vents may provide food for underwater ecosystems. It represents a piece of critical evidence on the origin of life.

You can read these articles that are certainly clarifying in the description of his experiments and discoveries:

1- Hazen, R. M., Papineau, D., Bleeker, W., Downs, R. T., Ferry, J. M., McCoy, T. J., ... & Yang, H. (2008). Mineral evolution. American Mineralogist, 93(11-12), 1693-1720.

2- Gonzalez, G., & Richards, J. W. (2020). The privileged planet: how our place in the cosmos is designed for discovery. Gateway Editions.

6 0
3 years ago
The typical size of a bacterium is <br> A. 1 nm<br> B. 10 nm<br> C. 1000 nm<br> D. 1 km
mestny [16]

Answer: 1000 nm

Explanation:

Bacteria are the type of biological cell. They constitute a large domain as they are found every where on the earth.

These are few micrometer in length which means 200-700nm . It depends on the type of the bacterial cell. The bacteria are the first organism that appeared on earth.

They are found in water, on land, desert, hydro thermal vent, snow et cetera. These are variable in shape.

5 0
3 years ago
What is the probability that each of the following pairs of parents will produce the given offspring: 1. AABbCc x aabbcc à AaBbC
ICE Princess25 [194]

Answer:

1) AaBbCc, 50% - 2) AAbbCC, 3,125% - 3) AaBbCc is 12,5%.

Explanation:

<u>1º cross</u>.

Parental)          AABbCC             x               aabbcc

Gametes)   ABC   AbC   ABC    AbC    ABC    AbC    ABC    AbC

                   abc    abc   abc     abc      abc     abc     abc     abc

Punnet Square)   <em>Only filled with the progeny genotype AaBbCc</em>.

             ABC       AbC       ABC       AbC         ABC      AbC         ABC     AbC

abc      AaBbCc     ---      AaBbCc     ---         AaBbCc     ---        AaBbCc    ---  

abc      AaBbCc     ---      AaBbCc    ---         AaBbCc     ---        AaBbCc    ---  

abc      AaBbCc     ---      AaBbCc     ---         AaBbCc     ---        AaBbCc    ---  

abc      AaBbCc     ---      AaBbCc     ---         AaBbCc     ---        AaBbCc    ---  

abc      AaBbCc     ---      AaBbCc     ---         AaBbCc     ---        AaBbCc    ---  

abc      AaBbCc     ---      AaBbCc     ---         AaBbCc     ---        AaBbCc    ---  

abc      AaBbCc     ---      AaBbCc     ---         AaBbCc     ---        AaBbCc    ---  

abc      AaBbCc    ---      AaBbCc     ---         AaBbCc     ---        AaBbCc    ---  

   

F1 Genotype)    32/64 AaBbCc

                          32/64  AabbCc (shown as the symbol "---" in the      

                          punnet square)

The probability of producing offspring with genotype AaBbCc is 50%.

---------------------------------------------------------------------

<u>2º cross.</u>

Parental)          AABbCc            x               AaBbCc

Gametes)   ABC   ABc   AbC    Abc    ABC    ABc    AbC    Abc

                     ABC   ABc   AbC     Abc   aBC    aBc     abC    abc

Punnet Square)   Only filled with the progeny genotype AAbbCC.

          ABC    ABc      AbC      Abc     ABC     ABc     AbC       Abc

ABC      ---       ---          ---          ---        ---        ---          ---           ---  

ABc       ---       ---          ---          ---        ---        ---          ---           ---  

AbC       ---      ---    AAbbCC     ---       ---         ---     AAbbCC    ---  

Abc       ---       ---          ---           ---       ---        ---          ---           ---

aBC       ---      ---          ---           ---        ---       ---          ---           ---  

aBc       ---       ---          ---           ---        ---       ---          ---           ---  

abC      ---       ---          ---           ---        ---        ---          ---          ---  

abc       ---       ---          ---           ---        ---        ---          ---          ---

   

F1 Genotype)  2/64 AAbbCC

                       The rest of the progeny have different genotypes that are represented with the symbol "---" in the punnet square.

The probability of producing offspring with genotype AAbbCC is 3,125%.

--------------------------------------------------------------------

<u>3º cross.</u>

Parental)          AaBbCc            x              AaBbCc

Gametes)   ABC   ABc   AbC    Abc    aBC    aBc    abC    abc

                     ABC   ABc   AbC    Abc    aBC    aBc    abC    abc

Punnet Square)   Only filled with the progeny genotype AaBbCc.

          ABC       ABc       AbC       Abc      aBC     aBc       abC       abc

ABC      ---           ---          ---           ---         ---        ---           ---      AaBbCc    

ABc       ---           ---          ---           ---         ---        ---      AaBbCc     ---  

AbC      ---           ---           ---          ---          ---    AaBbCc    ---           ---  

Abc       ---           ---           ---          ---     AaBbCc  ---           ---           ---

aBC       ---           ---           ---     AaBbCc    ---         ---          ---           ---

aBc       ---            ---       AaBbCc   ---          ---        ---           ---          ---  

abC      ---       AaBbCc      ---          ---          ---        ---           ---          ---  

abc   AaBbCc       ---            ---       ---           ---        ---           ---          ---

   

F1 Genotype)  8/64 AaBbCc

                       The rest of the progeny have different genotypes that are represented with the symbol "---" in the punnet square.

The probability of producing offspring with genotype AaBbCc is 12,5%.

7 0
3 years ago
What is spinal cord and how it is protected in the human body
Mademuasel [1]
<span>The spinal cord is the foremost road for message attaching the brain and external nervous system.</span>

The body's spinal cord is preserved through the osseous spinal string pointed to the left side. The spinal string is produced of osseins named vertebrae / the backbone. Despite the spinal string is slightly adjustable, few of the vertebrae in the inferior segment of the spinal string displays wick.

3 0
3 years ago
Read 2 more answers
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