What is thought to be the correct sequence of these events, from earliest to most recent, in the evolution of life on earth? 1. origin of aerobic respiration 2. origin of multicellular eukaryotes 3. origin of cells with lipid bilayers 4. origin of cyanobacteria 5. origin of the low mass elements such as h and he?

List two new traits (structural or behavioral) that each new species of rat might demonstrate as it adapts to the conditions on two of the four islands. choose only two islands that are described in the lesson. record the island latter and the major habitat feature of the island. then list two new traits each rat subspecies might demonstrate in order to survive the habitat on that island. note: new traits should be unique to that island and be in response to that island’s habitat feature. i cannot remember islands that were names in the lesson so only answer if you have done the lesson (5.13 life science 7b) choose 2 of the islands and describe a structural and a behavioral trait for a rat on each island so 4 total answers, 2 different structurals and 2 different behaviorals, one for each rat for each island

Suggest why placing wheels under a heavy box reduces the neccessary force required to push it along at a constant speed.

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring