It started to mold what is now the grand canyons.
Answer:
A.) Pollen are well preserved in the sediment layers because they are highly resistant to decay.
B.) Other indicators that can be used to determine past climates are through the analysis of the width of tree rings and the coral reefs formed underwater.
D i believe i’m sorry if this is not correct if not try c
<span>It is through whistles that dolphins interact with the pod. Each dolphin has a distinct whistle that identifies it with other dolphins of its pod. If an individual is in danger, it uses a particular noise that indicates aid is needed, so the pod responds quickly.
</span><span>
Small dolphin species gather into multi-member pods as a way to compensate for their size when facing predators.</span>
