During a "leap year" we add an extra day to our calendar because:

A. The Earth takes 24 hours to rotate

B. The moon takes 27.3 days to orbit

C. Earth takes 365.5 days to revolve

D. The moon takes 29.5 days to orbit

Would an athletes ATP increase or decrease? Why?

Which is an example of a vestigial structure a (tailbone of a human B (flower of a plant C (fin of a fish D (tail of a monkey

What era is before and after the precambrian?

Explain why DNA is replicated?

Which revision correctly uses an appositive to combine the sentences? my american history teacher is named mr. turner. mr. turner taught us about the u. s. home front during wwii. my american history teacher taught us about the u. s.

Which of the following is an example of a cultural control of pests? using natural pest predators using pest hormones using synthetic pesticides keeping homes clean

Why do microbiologists often disinfect work areas before working with bacterial cultures?

According to the animation, to what genetic element does the rna polymerase bind? according to the animation, to what genetic element does the rna polymerase bind? the operator the repressor mrna the repressor protei

Is Pinocytosis a form of passive transport?

If part of the xylem of a young oak tree is destroyed, which of the following functions would it interfere with most? A) conduction of water to the leaves B) conduction of carbohydrates to the roots C) absorption of carbon dioxide from air