<span>Sometime before 100 B.C., Greek sailors coming from Egypt discovered a shortcut to India. Much easier and more direct than the arduous overland route, or than hugging the deserted coastlines of Arabia and Persia for 5,000 miles, this route took only weeks to travel. Sailing straight out into the open waters of the Arabian Sea during the late spring, ships were whisked by the monsoon winds on a steady northeast course, arriving on India’s west coast by mid-summer. It was a daring feat for those first sailors who attempted it. In a time when ships rarely ventured out of sight of land, and open waters invited the prospect of drifting aimlessly at sea, it took an extraordinarily bold, unlucky, or stupid navigator to sail out into one of the largest bodies of water on the planet. Fortunately for those first crews who made the attempt, they were saved by one of the great forces of nature: the monsoon.
Plz give me branliest</span>
Answer:
A and C
Explanation:
The rock layers must have formed at different times because they contain two different biozones. The rock layer containing the trilobites must have formed before the one containing the ammonites. The key thing to note here is that the Trilobites only lived from 540 to 248 million years ago. And that the Ammonites were from 245 to 65 million years ago. So there's a 3 million year gap between these 2 different creatures where neither of them existed. So the dig where the trilobites were found has to be at least 3 million years older than the dig where the Ammonites were found. So with that in mind, let's look at the options and see what makes sense.
The rock layers must have formed at the same time because they both contain biozones. * This is nonsense no matter what dates you're speaking of. In effect it claims that all rocks that indicate life were created at the same time. So this is definitely a bad choice.
The rock layers must have formed at different times because they contain two different biozones. * This is technically incorrect since it assumes that all biozones represent an unique period of time which is incorrect. However, since the biozones represented by the presence of Trilobites and Ammonites don't overlap, it is true that these these rock layers were formed at different times. I would have preferred if this option said "non overlapping biozones". But on the balance, I'd consider this option to be true, so it should be selected.
The rock layer containing the trilobites must have formed before the one containing the ammonites. * This is definitely true since the last Trilobite died about 3 million years before the first Ammonite lived. So this is a correct choice.
The rock layer containing the trilobites must have formed after the one containing the ammonites.
* This is the opposite of the previous option. And since the previous option was true, this option must be false. So this is a bad choice
Answer:
False
Explanation:
:D i took the test on this and im pretty sure i got this one right, but if not im super sorry!!! :(
Answer:
See explanation
Explanation:
1. Super Nova
2. Apparent Magnitude
3. One Parsec
4. Cosmology
5. Pulsars
6. Neutron Stars
7. Quasars
8. Brown Dwarf
9. Nebula
10. Constellation
11. Dark Matter or Dark Energy (not sure which one because they are extremely similar and I’m no scientist)
12. Gravity
13. Stellar Evolution
14. Red Shift
PLEASE mark me brainliest I spent 25 minutes working on this for you please and thanks.
