It is not likely for a recessive lethal allele to completely disappear from the gene pool because it is maintained

a homozygous dominant individuals
b homozygous recessive individuals
c heterozygotes (carriers)
d none of these

In what for do plants utilize nitrogen? why do they need nitrogen?

Acar company is testing seatbelts using crash test dummies. the company finds that when cars come to a sudden stop, the crash test dummies' bodies continue to move forward. the seat belt keeps the crash test dummies from hitting the back of the seat in front of them. why do the crash test dummies' bodies continue to move forward even though the car stopped? a. the friction opposing their bodies' movement keeps them in motion. b. the inertia of their bodies keeps them in motion. c. the forward acceleration of the car keeps them in motion. d. the gravity pulling on the car keeps them in motion.

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above