Which is an example of trace fossils? A. an insect getting stuck in a tree sap that hardened
B. sediment hardening around a trilobite
C. footprints from a dinosaur in mud that hardened
D. minerals replacing tissue in wood and hardening

A. An insect getting stuck in tree sap that hardened

Explanation:

The answer is A because that is one of the ways to collect DNA samples for animals. The other way is digging for fossils.

answer: oceans, duh

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explanation:

plate tectonics and volcanic euptions

over time, plate tectonic processes cause continents to move to different positions on the globe.

for example, britain was near to the equator 300 million years ago, and therefore was hotter than it is today. for further details look at our climate through time poster or online map.

the movement of the plates also causes volcanoes and mountains to form and these too can contribute to a change in climate.

mountain ranges formed by plate tectonics. large mountain chains can influence the circulation of air around the globe, and consequently influence the climate.   warm air might be deflected somewhere cooler by the mountains.