Answer:
The earliest known life-forms are putative fossilized microorganisms, found in hydrothermal vent precipitates, that may have lived as early as 4.28 Gya (billion years ago), relatively soon after the oceans formed 4.41 Gya, and not long after the formation of the Earth 4.54 Gya
Explanation:
It’s A- the president isn’t going to turn up to any old event! ^^ Hope this helps
The course of World War II, leading up to the end of 1940, was an
expansion of territory by the country of Germany. Germany was
beginning to invade its neighboring countries. http://www.answers.com/Q/Describe_the_course_of_World_War_2_in_europe_until_the_end_of_1940
