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Jobisdone [24]
3 years ago
5

When seeds germinate, roots grow downward and stems grow upward in response to gravity. This response to gravity is called _____

__.
A. phototropism B. hydrotropism C. thigmotropism D. geotropism
Biology
1 answer:
VARVARA [1.3K]3 years ago
8 0

D. geotropism. Phototropism is the response to light, hydrotropism is the response to moisture, and thigmotropism is the response to a touch stimulus

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Iron reacts with atmospheric oxygen to form iron oxide or ferric oxide. Look at the chemical equation for this reaction:
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Answer:

4 Fe + 3 O₂ → 2 Fe₂O₃

Explanation:

Let's start with the oxygen.

Reactants - 2

Products - 3

What number do 2 and 3 have in common? 6.

Put a 3 in the reactants and a 2 in the products to balance the oxygen.

Fe + 3 O₂ → 2 Fe₂O₃

Now let's look at the iron.

Reactants - 1

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Put a 4 in the reactants to balance the iron.

4 Fe + 3 O₂ → 2 Fe₂O₃

The equation is balanced. Hope that helps.

8 0
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Hello again!

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4 0
3 years ago
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natta225 [31]
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3 0
3 years ago
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How compelling are the arguments for the monoclonality of tumor cell populations, and what logic and observations undermine the
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dimaraw [331]

Answer:

The sites of replication.

Explanation:

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