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Zepler [3.9K]
3 years ago
12

1. Why do atoms combine with each other? 2. What determines the reactivity of an atom?

Biology
1 answer:
Andrej [43]3 years ago
8 0
1. The number of each electron in this shell determines how an atom combines with other atoms to form compounds.

2. The number of electrons in an atom's outermost valence shell governs its bonding behavior.
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Can someone please help me
Usimov [2.4K]

Answer:

1A - Respiratory = trachea, lungs... however both arteries and veins move oxygen around the body, and are therefore valid answers

1B - Skeletal = bones

1C - Muscular = muscles

1D - Digestive = stomach, large/small intestine

1E - Circulatory = heart, veins and arteries

2. Cellular respiration is the conversion of sugar into energy the cell uses to function via various chemical reactions. Digestion is an example of this. Stomach acid breaks down food into sugars that cells break down further into energy to keep you alive

3. Bones contain bone marrow deep inside of them which is responsible for the creation of red blood cells. Your lungs can move air all they want but would be useless without red blood cells to take the oxygen to cells and take the CO2 away from them.

5 0
3 years ago
14. A food web is shown below.
anzhelika [568]

Answer:

it's E) hawks

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because the energy gets smaller as the predators increase.

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Answer:

BH BH bH bH

Explanation:

I used the foil method to solve the problem

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3 years ago
Identify the circumstances associated with increased rates of physical weathering. select two correct answers.
barxatty [35]

Answer: freeze-thaw cycles and hot and cold cycles

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