Which of the following animals lay eggs with protective shells?

fish
amphibians
mollusks
reptiles

If only one option can be chosen;Reptiles. If its more than one then I'd put Reptiles and mollusks.

Explanation:

Reptile eggs are laid out of water and are surrounded by a protective shell, either flexible or inflexible. Mollusks are also known to lay eggs with a hard shell using calcite to construct the eggshells. Fish and amphibians generally lay eggs which are surrounded by the extraembryonic membranes but do not develop a shell, hard or soft, around these membranes. Some fish and amphibian eggs have thick, leathery coats, especially if they must withstand physical force or desiccation.

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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.

the cost of mining is extremely low compared to the money earned from mining, creating income to improve the environment.