Answer:
A. Cambrian explosion , Active plate margin, True.
Explanation:
- The burgess shale is a window into life on earth during the exposition of Canadian Rockies. Itis one of the earlier imprints containing the soft part imprints.
- Fossil deposits of burgess shale correlate to the Stephen formation. that were collected about 508 million years ago. Beds were deposited at the base of the cliffs 160 meters tall.
- North American plate is considered as an active plate margin, as this margin is moving westwards. And the pacific plate is shrinking in size. The presence of Icelandic Arcand festoons depicts this.
- The laptus ocean in the paleozoic era was an Icelandic volcano found in the ancient oceanic crust of ophiolites of Newfoundland. This ocean was earlier also named as the titan impetus.
<u /><u /><em>Dunes </em>and <em>unusually shaped rocks</em>
Answer:
The moon has cycle phase of about 28 days.
Moon is directly impacted by the light that it absorbs from the sun and reflects this light which can be seen on earth and as the moon and the earth have a same cyclic rotation thus we tend to see the same side of the moon in every the same cycle and hence the patterns are of the new moon, half-moon and the full moon and the half and the new or declining moon again.
1. New moon -- Invisible
2. Waxing crescent. --- Late morning
3. First-quarter. --- Afternoon
4. Waxing Gibbous. ----- Late afternoon
5. Full moon. --- Midnight
6. Waning gibbous. --- early morning
7 . last quarter. --- Late night
8. Waning crescent. --- Pre-dawn
have an amazing day! staysafe:)
