Which of the following can scientists determine by comparing fossils from different layers of sediment? Ahow different species have diversified over time
Bthe order in which different types of organisms appeared on Earth
Cexactly how many organisms were alive during a given time period

20 points and brainlist 1. london has suffered from terrible air pollution for at least seven centuries. why is the city so prone to its famous “london fog? ” what did london do to get rid of its air pollution? 2. why does air pollution cause problems in developing nations more than in developed ones?

All vaccination should(n’t) be mandatory! 1.at least 5 sentences explaining 2.why? 3.in the end summarize the sentence

Diffusion and osmosis are forms of passive transport