Probability of a gamete getting one of a parent's
two alleles for a gene

d. all of the above

Explanation:

All of the given choices contribute to the elevated level of carbon in the atmosphere.

This is one of the leading cause of climate change.

Greenhouse emissions from the surface is a huge problem which originates from increasing the release of these gases into the atmosphere. Carbon dioxide is one of the greenhouse gases, and it is the main component of the emissions. Deforestation involves the removal of trees from the earth surface. Trees naturally removes carbon from the environment. They use the carbon to manufacture their own food. Human activities such as industrial processes, burning of firewood for cooking, etc. all contributes significant amount of carbon into the atmosphere.