(a) what is known about a topic
What is known about the topic is that we are facing a rapid climate change globally. The videos has just shade more light, there is really a huge negative effect to all factors on the environment like the agriculture sector. T
(b) what is not yet known about a topic (in this case, climate change in Southern Africa).
The major impacts of climate change in the years to come and the effects to the upcoming generations is not yet known about the topic.