Answer:
Corals reef is a underwater ecosystem that builds on limestone beds, CaCo3
Explanation:
- They have exoskeletons made up of limestones and its possible that the corals might have moved offshore with changes in the sea levels as, he finds an abundance of large clam fossils, that produce within the interlocking of limestone section.
- Since the clam is made up primarily of coral fragments its possible that the corals might have buried under the landmass when the upliftment was completed.
- The skeletal remains of the coral polyps that are now stratified in the rocks are suggestive of reef formation around the landmass earlier period and these were mostly found in tropical oceans.
- Thus as he moves away and sees limestones with shales, which has clam fossils he had seen previously.
The eastern, western and southern mountain ranges known as Sierra Madre Oriental, Sierra Madre Occidental and Sierra Madre del Sur, respectively. The Mexican Central Plateau or Mexican Altiplano, delimited by these three mountain ranges. Mexico has a temperate, Mediterranean-like climate.
Answer:
absolute brightness
Explanation:
The observational fact about a cepheid variable star that leads to a measurement of its distance from earth is that its period of variation is directly related to its absolute brightness
<span>"C. one complete spin on its axis</span>" is the correct answer. One complete orbit around the sun by a planet would be referred to as a period of rotation. Periods describe one full movement.
The gap between two mountains is called Saddle.
