A scientist can study <span>the relationship between the Tiktaalik roseae and modern fish and tetrapods by creating </span>a diagram that hypothesizes ancestry relying on the fact that common descent<span> describes how, in </span>evolutionary biology<span>, a group of </span>organisms<span> share a </span>most recent common ancestor<span>.</span>
Expand more. Not understanding the question with what you have here.
They might not have that alarm response to that chemical substance or they could be far enough from it to not be effective
In the northern hemisphere it would be winter, in the southern hemisphere it'd be winter
