The answer is c because a system contains organs and they contain tissues and they contain cells
Potassium-40 has a half life of 1.251×billion<span> years</span><span>. To determine the percentage potassium-40 remaining after 3.9 billion years, divide
3.9 by 1.251, = 3.12.
This is the number of times the original amount of potassium-40 reduces by 50%. The remaining percentage is therefore 100%/(3.12 * 2) = 16.03%.</span>
Answer:
D. Making a prediction.
Explanation:
In many cases, the words "hypothesis" and "prediction" are used in the same context. However, in science, they do not have the same meaning.
A hypothesis is an <u>intelligent, testable, and possible explanation that is based on facts</u>. It analyzes the correlation between different variables.
A prediction, on the other hand, is usually <u>based on little or simpler information instead of experiments or scientific facts and are generally related to future events, therefore, in many cases, they tend to start with the word "If" or have the word "then" on the statement.</u>
In this case, "<em>If ferns need warm weather to grow, ferns in the warmer areas will grow faster</em>," this is a simple prediction that is not necessarily based on scientific facts. It is making a possible prediction or pure guess. This is also illustrated by the usage of "if" on it.
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Complimentary base pairs of DNA are:
1) Adenine & Thymine
2) Cytosine & Guanine
Hope this helps!
The best and most correct answer among the choices provided by your question is the second choice or letter B.
Crossing over occurs during meiosis when chromosomes overlap and sections of each chromosome switch places in prophase II.