Cause-affect about timer companies and clear cutting?

Pls help

Which group of algae is characterized by unicellular organisms and includes some members that would be better classified as zooflagellates? euglenophytes red algae sporozoans green algae

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

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?