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Debora [2.8K]
3 years ago
15

The earth is composed of three different chemical layers: core, mantle, and crust. This layering effect is called _____.

Biology
1 answer:
almond37 [142]3 years ago
8 0

Answer:

i believe that the answer is sedimentation

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Carol is enjoying eating her dinner. While eating, she notices that her saliva secretion is higher than normal and that she feel
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3 years ago
The letter X in the diagram below represents what enzyme used in the process shown?
Anvisha [2.4K]

<u>Answer</u>: Option D. RNA polymerase.

<u>Explanation</u>:

  • Transcription is the process which is used to produce RNA from a DNA template.
  • The enzyme involved in the process of transcription is <em>RNA</em> <em>polymerase</em> which is responsible for separating the DNA strands and making an RNA which is complementary to the DNA.
  • RNA polymerase joins the nucleotides in the newly formed RNA strands by utilizing the energy released from the cleavage of the additional phosphate bonds that are removed by it.
  • The RNA polymerase dissociates from the DNA only after the process of transcription is complete.

Attached is an image with the correct labeling.





5 0
3 years ago
In a well-balanced ecosystem, squirrels eat nuts, raccoons feed on squirrels, and bears feed on raccoons. It was observed that t
BlackZzzverrR [31]
Trophic levels go by, 
Producer (The nuts)
Primary Consumer (Squirrels)
Secondary Consumer (Raccoons)
Tertiary Consumer (Bear)


So squirrels would be at a lower trophic level.
 Hope his help :)

7 0
3 years ago
Read 2 more answers
Persons with __________ blood have neither antigen a nor antigen b on their red blood cells but have antibody anti-a and antibod
Flura [38]

Persons with O blood have neither antigen a nor antigen b on their red blood cells but have antibody anti-a and antibody anti-b in their plasma.

ABO blood grouping was discovered by Austrian scientist Landsteiner. It consist of four blood groups- A, B, AB, & O.

Red blood cells have certain extension of the proteins that are called antigen. Two types of antigens are there antigen a & b. The RBCs which have a particular antigen will not have the antibody against the same.

Blood Group A has antigen A and antibody B. Blood group B has antigen B and antibody A. Blood group AB has both antigen and no antibodies while blood group O has no antigen and antibody A & B.

To learn more about red blood cells here

brainly.com/question/17890844

#SPJ4

8 0
2 years ago
In what generation does this population reach its carrying capacity
Katena32 [7]

Answer:

The logistic population growth happens as the growth rate declines as the population exceeds the carrying power. The highest number of people in a community that the ecosystem can sustain is carrying capacity.

Explanation:

8 0
3 years ago
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