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valentina_108 [34]
3 years ago
10

A 2 inch, f/4 reflector has a focal length of.

Biology
2 answers:
trasher [3.6K]3 years ago
8 0
The answer is B.) 4 inches
nadya68 [22]3 years ago
7 0

Answer:

I think it might be 8 inches

Explanation:

My reasoning for this answer is that when you want the focal length of a telescope, you multiply the number behind the "f/?" so in other words, it would be

2 * 4 = 8

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Atoms become ions by gaining or losing electrons. When two ions join together, they form a bond known as an Ionic bond.
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How has genetic engineering been used by humans in the past?
S_A_V [24]
Making foods bigger and “better” example would be fruit. A strawberry without genetic engineering are small and sometimes faster better. With GE it’s big and more red and filled with chemicals
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3 years ago
Protozoans are the only organisms that can convert nitrogen from the air into chemical compounds that plants can use.
tigry1 [53]

Answer: False

Explanation:

Protozoans are not the organism that fix nitrogen for the plants. The organism that fix nitrogen to convert it into a form which can be used by plants are known as diazotrophs.

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These organism can grow without any external source of fixed nitrogen. Example: Rhizobia and azospirillium.

5 0
2 years ago
If you see a fossil fish in a museum that is labeled one of the earliest fish known, what era is it probably from?
Korvikt [17]
I think it is from the Paleozoic era

Hope this helps
3 0
2 years ago
Read 2 more answers
A key feature of animal body plans is that they can show multiple types of symmetry.For example,,a dog would represent bilateral
Stella [2.4K]

Answer:

A key feature of animal body plans is that they can show multiple types of symmetry.For example,,a dog would represent bilateral symmetry,while a jellyfish and other cnidarians would represent <u><em>radial symmetry</em></u>.

Explanation:

In biology, symmetry can be described as the balanced distribution of the body shape of an organism.

Radial symmetry can be described as a symmetry which depends on a central axis. The symmetry of cnidarians depends on a central axis hence they have radial symmetry.

Bilateral symmetry can be described as a symmetry in which the two halves of the symmetry are mirror images of one another. For example, humans, dogs etc.

6 0
3 years ago
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