9) it is a warm summer night, 32oc, with the relative humidity at 100%. during the night, the air temperature drops to 18oc. you would expect to see on the ground in the morning.

a) dew

b) fog

c) frost

d) rain
10) scientists believe that during the late cretaceous period, many small seas dried up and new mountains began to rise. which would most likely cause them to believe the temperature decreased during this time?

a) the absence of fossils of warm-weather plants.

b) the absence of fossils of many species of fish.

c) the discovery of fossils of fish with small legs.

d) the discovery of fossils of warm-weather insects.

11) a hurricane is most likley to occur in an area

a) near warm water.

b) near cool water.

c) with strong wind.

d) with little moisture.

12) a team of archaeologists excavating a sedimentary rock layer come across some primitive hunting tools used by early humans. as the dig progresses, they unearth the fossilized remains of a dinosaur from another layer of the sedimentary rock. why do these discoveries indicate that the rocks were formed over millions of years?

a) early humans appeared on earth about a million years ago.

b) humans and dinosaurs coexisted about a million years ago.

c) dinosaurs became extinct millions of years before humans appeared.

d) humans hunted dinosaurs and were responsible for their extinction.