Dating uses the properties of atoms in rocks and other objects to find their ages.

a.
comparative
c.
approximate
b.
absolute
d.
relative

also i'm not entirely sure what subject this is.

hello

answer: collecting information/data

reason: the student is going around and asking people questions to collect data

i hope this

ecological efficiency: % of usable energy transferred as

biomass from one trophic level to the next typical is 10% efficient (90% of

energy is lost),is diagramed as the pyramid of energy flow. then osprey eagle

are tertiary consumer and the shrimp are primary consumer, so to balance

mass of shrimp (1/0.1) / 0.1 = 100 kg 

since there are no options posted i'll give you a few examples.

a dolphin's flipper, bird's wing, cat's leg.