Answer:
Iron -> Fe - Group 8
Silver -> Ag - Group 11
Mercury -> Hg - Group 12
Oxygen -> O - Group 16
Gold -> Au - Group 11
Potassium -> K - Group 1
Xenon -> Xe - Group 18
Magnesium -> Mg - Group 2
Hydrogen -> H - Group 1
Answer;
The above statement is false
The total number of organisms an ecosystem can support is its carrying capacity.
Explanation;
-Carrying capacity is the average population density or population size of a species below which its numbers tend to increase and above which its numbers tend to decrease because of shortages of resources.
-For a given region, carrying capacity is the maximum number of individuals of a given species that an area's resources can sustain indefinitely without significantly depleting or degrading those resources.
The carrying capacity is different for each species. in a habitat because of that species’ particular food, shelter, and social requirements.
Pi and sigma bonds
Pi is double bonds and sigma is single bonds
True, just look at the weather channel on TV :)