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Katen [24]
3 years ago
6

crayfish, like the one seen here, lives in water. Bennie wondered how changes in temperature would affect the movement of crayfi

sh. He wanted to design an experiment to test his idea. What would be Bennie's manipulated variable in the experiment?
Biology
1 answer:
Natali [406]3 years ago
5 0

Answer:

The answer is "The temperature of the water."

Explanation:

Because he is trying figure out if the temperature affects how the crayfish lives

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they act like they have the right to treat you like dodo but if he is nice he will be prob either shy or hide his feelings.

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3 years ago
What are the characteristics of greenhouse
mart [117]

Answer:

Access. A basic feature of any greenhouse is access. ...

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Electricity.

Explanation:

theres more but these are the important ones .

5 0
3 years ago
Compare and contrast light microscopes, scanning electron microscopes, and transmission electron microscopes. Sort each statemen
podryga [215]

Answer:

<u>Light microscope</u>:

  • use a beam of light to produce magnified images
  • can be used to examine living cells and tissues

<u>Scanning electron microscope</u>:

  • use a beam of electrons to produce magnified images
  • can be used to examine DNA
  • can be used to examine cells

<u>Transmission electron microscope</u>:

  • use a beam of electrons to produce magnified images
  • can be used to examine DNA
  • can be used to examine cells

Explanation:

Light microscope: is a commonly used microscope also known as compound microscope. Magnifies images from 40X upto 1000X. It uses ray of visible light to produce a magnified image. The light microscope can be used to view specimen of both living and dead cells or tissues. However, it doesn't give a detailed view of a specimen like electron microscope.

Scanning electron microscope: It uses electron beam as an illuminating source. It has a much higher resolving power than light microscope because it uses electrons instead of light. It magnifies object upto 500000 times the actual size. Internal structures can also be viewed. However, only dead specimen can be used because the beam of electrons can kill the cells. They are of two types:

  1. <u>Scanning electron microscope(SEM): </u>an electron beam passes over the specimen's surface and displaces electrons which are then focused on  a screen to form an image. Images appear in 3-D
  2. <u>Transmission electron microscope: </u>electromagnets magnify the image by passing beam of electrons through a thin specimen. Images appear in 2-D

7 0
3 years ago
Relate plant structure and function to the process of photosynthesis and respiration​
Dmitry [639]

Answer: Photosynthesis is a process through which green plants prepare their food by using carbon dioxide and water as reactants in the presence of sunlight energy. The food produced in the form of carbohydrate. Respiration is the process in which the biochemical oxidation of the food occurs.

Explanation:

The plant structures like leaves are specialized for performing the process of photosynthesis. These leaves have chlorophyll pigment which traps the light energy from sun which is required for splitting the molecules of water in the process of photosynthesis. Respiration occurs through stomata in leaves. But it also occurs in stems through lenticels and in specialized roots called pneumatophores via tiny pores.

8 0
3 years ago
What's the function of stomata in plants
Gwar [14]
Plants use their stomata to take in Carbon dioxide and take out oxygen during photosynthesis. It's how they "breathe" if that makes it more understandable.
7 0
3 years ago
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