The earliest archaeological evidence of humans in Australia is from Lake Mungo , dating to 40,000 years ago.
You have to first make some observations and then ask a question. Then you make a hypothesis (or guess) what the answer is - do the experiment to see if you're right!
Im pretty sure its c but hope this helps :)
heeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee sorry person
These animals were living in an environment with a warm climate that results in changing sea levels. These conditions create a lot of shallow inland seas allowing these animals to thrive. The Cretaceous period is the last period of the Mesozoic area where new groups of mammals, birds, and flowering plants appeared on Earth.