Which best compares habitat preservation and laws that protect biodiversity?

Habitat preservation usually protects only individual species, while laws protect entire ecosystems.
Laws usually protect only certain species, while habitat preservation protects entire ecosystems.
Only habitat preservation has been shown to actually help protect biodiversity.
Only laws have been shown to actually help protect biodiversity.

Darla claims that the first periodic table developed by mendeleev was not completely accurate, so it is not useful at all. harmony argues that it establish the periodic table we use today, making it more credible. who is correct and why? darla is correct, because a model that has any mistakes should be thrown out. darla is correct, because a good model would not need to change. harmony is correct, because mendeleev’s model had all of the information correct in the first version. harmony is correct, because mendeleev’s model made predictions that came true.

Which of these features are formed when hot groundwater is forced out through cracks in the earth's surface?

What is the average rate of the reaction between 10 and 20 s?