12.4

Mammals have a bony ____ with a backbone and jaws, breathe only with ____, have four limbs and skin covered with hair or fur.

• exoskeleton , lungs

• endoskeleton , gills

• endoskeleton , lungs

• exoskeleton, gills

What is one distinguishing feature of mammals that is absent in other classes of vertebrates?

• they breathe only with lungs and have four limbs

• they have milk-producing glands

• they are endothermic

• they have a bony endoskeleton with a backbone and jaws

Which is true concerning amphibian development?

• It includes an aquatic larval form.

• Newborns respire using gills.

• Adults respire using lungs.

• All of these

What is this instrument?

• Thermometer

• Barometer

• Anemometer

• wind vane

A balloon-borne package of sensors that gathers upper-level temperature, air pressure, and humidity is ____.

• Radiosonde

• Satellite

• Hygrometer

• Doppler Radar

Tags

NGSS.MS-ESS2-5

Where are the strongest winds in this image

• Northeastern Canada

• West Coast

• Florida

• Central US

Tags

NGSS.MS-ESS2-5

NGSS.MS-ESS2-6

What is the atomic number of Carbon?

• 6

• 12.4

• 8

• 10

Which of the following is the approximate pH of pure water at 25°C?

• 7

• 12.4

• 3

• 9

A solution has a pH of 12.4. Is it acidic, basic, or neutral?

• Acidic

• Basic

• Neutral

• Cannot be determined

What is the molar mass of Carbon Dioxide (CO2)?

• 44 g/mol

• 12.4 g/mol

• 28 g/mol

• 32 g/mol