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Digiron [165]
3 years ago
14

How will the different light conditions affect the rate of floating leaf disks?

Biology
1 answer:
skad [1K]3 years ago
4 0
Light will increase the rate of photosynthesis, should be reflected in the rate of disk rising - no disks should rise in dark since photosynthesis requires light
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Read 2 more answers
What is the answer?
Darina [25.2K]

Answer:

\boxed {\tt 3}

Explanation:

An element only has <u>one</u> type of atom and cannot be broken down by chemical means.

Let's analyze the answer choices.

1. This has two types of atoms, so it cannot be an element. It has more than one type of atom.

2. This has two types of atoms that are bonded together. It cannot be an element because there is more than one type of atom and the bonds can be broken.

3. This has one type of atoms, so it is an element.  

Therefore the best answer choice is 3.

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