Which among the following elements belong to period 3 in the periodic table?

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?

Why did adult crab numbers decline in he ecosystem, even though sea stars were still available?

How do the sperm cells get from the stigma to the ovules?