Scalar quantities describe only the magnitudes of measurements, whereas vector quantities describe the magnitudes and directions of measurements. Which of the following are vector quantities?
I. acceleration
II. force
III. length
IV. mass
V. speed
VI. velocity
A.
III, IV and V only
B.
I, III and V only
C.
II, IV and VI only
D.
I, II and VI only

Which of the following is not a main characteristic that scientists focus on when determining which kingdom an organism belongs to

The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease

Achemical that is released by an animal as a signal to other members of the same species is called a pheromone. t or f