The diagram below shows the forelimbs of four different organisms. >>
Human
Cat
Whale
Bat
What does the diagram show, and how does it provide evidence for evolution?

What is the mass of phosphorous in a 51-kg person

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?

Can you guys answer these questions i need it before 1: 00pm