Question

Some scientists theorize that climate changes can be caused by _____.

1. an increase in Earth’s interior heat

2. variations in the color of light coming from the sun

3. a change in the angle of the Earth’s axis

4. a change in the chemical composition of the oceans

Answer 1

4. A change in the chemical composition of the oceans.

Explanation:

Although the oceans help reduce climate change by storing large amounts of carbon dioxide, increasing levels of dissolved carbon are changing the chemistry of seawater and making it more acidic. Increased ocean acidity makes it more difficult for certain organisms, such as corals and shellfish, to build their skeletons and shells. These effects, in turn, could substantially alter the biodiversity (the variety of life in the world or in a particular habitat or ecosystem) and productivity of ocean ecosystems.

I hope this helps! Have an amazing day!