To support life, why must a planet have a roughly circular orbit around a sd tar? a. so fresh water is available. b.to keep the proper air molecules in the atmosphere. c.to support chemical reactions. d.for temperature regulation

The activity of the modern sample is 1.10 bq . how long does that measurement take?

Which step is not included in the step approach to calculating the greatest common divisor?

In cellular biology, what is the definition of the word specialized? te o a. carried across the cell membrane by a specific protein a o b. a structure within a eukaryotic cell that performs a specific function o c. adapted to a specific function or condition es essere beste ser bendere s b tele ee o d. containing unique dna ser eeseen les, e nde este ses see ste submit e