Feathers help birds fly and provide insulation, and class Aves is for the birds, literally. Given these facts, feathers help what kind of animals fly and provide insulation among the following options: - preventing heat transfer - dragons - passenger pigeons - butterflies - animals in the class Aves - airplanes - it protects them - retaining heat
animals in the class Aves
------
Bacteria cause food to spoil, and milk was loaded with bacteria that quickly spoiled, making it undrinkable. Given these facts, what can make milk undrinkable among the following options: - evaporation - Enzymes - boiling - glycogen - liquid - nutrients - bacteria - vaporization
bacteria
------
Insulated material can be used for keeping warm, and birds waste a lot of body heat trying to keep warm in exposed areas. Given these facts, insulated material can be used to prevent wasting a lot of what among the following options: - sunny days - body heat - body water - heat energy - contained areas - electricity - fever sweats - power
body heat
------
Poison causes harm to living things, and toxins or poisons are a stress. Given these facts, _causes harm to living things among the following options: - Nematoda - organisms - stress - pesticide - nutrients - stimuli - animals - moisture
stress
------