Answer:
d. no one knows for sure
Explanation:
The universe is infinitely big. It goes on forever and ever, so no one knows what's in it. We might find something really big, but we'll never know if there's something even bigger out there.
Answer: mercury (i think)
Answer:
Mutations are random Mutations can be beneficial, neutral, or harmful for the organism, but mutations do not “try” to supply what the organism “needs.”
Explanation:
Basically the first part is when the Euglena starts swimming to the light direction.
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