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katen-ka-za [31]
3 years ago
11

What are the similarities between an open and closed system? I will give Brainliest or whatever its called!

Biology
1 answer:
Alisiya [41]3 years ago
8 0

In an open circulatory system, the cells are in direct contact with the cells in the organism. An example of this is the jellyfish. In a closed circulatory system, cells are not in direct contact with the environment.Take our own bodies for example. When we inhale oxygen fills our lungs and diffuses into our blood. When we exhale, we release waste, or carbon dioxide and other gases.

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coldgirl [10]
1. Suzie's hypothesis (i.e. prediction of results) is that ferns which are placed in white light will grow to a taller height after two weeks than ferns which are placed in other coloured light or in a closet.

2. Her independent variable (the thing she changes to produce a result) is the kind of light that she places each plant in.

3. The dependent variable (the thing she measures) is the height of the plants after two weeks.

4. I would say her control group would be the plant placed in the closet, because every other group is exposed to some form of light.

5. I would say that Suzie has 4 experimental groups: white, red, blue, and green light.

6. The constant variables were the amount of water each plant was given, the initial height of the plants, the age of the plants, the species of fern, and what she planted the ferns in.

7. To determine how each fern did, Suzie could measure the height in addition to noting the appearance of all the plants. E.g. did any look paler than the others?
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3 years ago
Meiosis and fertilization are important for the survival of many species because these two processes result in —
lidiya [134]

Answer:

Reproduction.

Explanation:

Reproduction is the process through which species continue their generation.

8 0
2 years ago
A sonic boom is produced by a jet. What can you determine about the jet's motion?
IRISSAK [1]
"C" The only way something will make a shockwave or a sonic boom is if it's traveling faster than the speed of sound
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3 years ago
A species of frog has inhabited the tropical rain forests of south america for the
kobusy [5.1K]

Answer:

Option B. makes the most sense.

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2 years ago
Which of the following components of the immune system form memory cells after you receive a vaccine?
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<span>B and T cells  ............</span>
5 0
2 years ago
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