Final answer:
Human activities that increase greenhouse gas emissions are causing enhanced greenhouse effects, leading to global warming and changes in climate patterns. These changes include more severe weather events, agricultural challenges, biodiversity loss, and rising sea levels. The consensus among scientists attributes these changes to human actions, with efforts underway to mitigate the effects through cleaner energy solutions.
Step-by-step explanation:
The activities referred to in the question relate to the increased emissions of greenhouse gases into the Earth's atmosphere from sources such as industry, transportation, and farming. This leads to what is known as the greenhouse effect, a natural process that is exacerbated by the elevated levels of gases like carbon dioxide and methane. The enhanced greenhouse effect is responsible for the warming of Earth's surface, a phenomenon commonly known as global warming.
As a result of global warming, we observe changes in global climate patterns which include a worldwide increase in temperature. This can have various impacts, including more intense storms, alterations in precipitation patterns that can affect agriculture, a reduction in rain forest biodiversity because of changing habitats, and rising sea levels due to the melting of polar ice caps and thermal expansion of the oceans.
The scientific consensus indicates that these changes are anthropogenic, meaning they are primarily caused by human activities. In response to these challenges, there is a growing push towards reducing greenhouse gas emissions through means such as moving away from fossil fuels and investing in cleaner sources of energy.