We use urainium to date the remains
The mineral form of iron II oxide is known as wüstite. Hematite (69.9% Fe) and Magnetite ( 72.4% Fe) are two other examples of iron oxide. Magnetite has naturally high iron content than Hematite.
iron-to-oxygen ratios of
Hematite
3.79 g of Fe and 1.63 g O
and
Magnetite
22.8 g Fe and 8.70 g O
where Fe symbolise iron and O symbolise oxygen.
It is important for a scientific claim to be accurate because a scientific claim is supposed to be able to be trusted and it needs to be credible. To develop a scientific claim you need to first test your theory many times to make sure that the same result happens every time.
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Answer:
The increase in the average beak depth caused by both an increase in large-beaked finches and by a decline in small-beaked finches
Explanation:
The increase in the average beak depth is caused by both an increase in large-beaked finches and by a decline in small-beaked finches. All the small-beaked finches got disappeared. As a result, only large-beaked finches were left. The drought decreased the number of seeds such that large-beaked finches could eat the larger seeds to survive.
Answer:
<em><u>In general, litmus paper is red below a pH of 4.5 and blue above a pH of 8.3. If the paper turns purple, this indicates the pH is near neutral.</u></em>