Show:
Characteristics of Birds
Kinds of Birds
Characteristics of Mammals
Placental Mammals
Monotremes and Marsupials
100
the function of a bird's down feathers
What is help birds stay warm
100
the four categories of birds
What is flightless, water, perching, and birds of prey)
100
the two features that help keep mammals warm
What is fur and a layer of fat
100
the organ in which an embryo grows
What is uterus
100
a mammal that lays eggs
What is monotreme
200
what is contained in the gizzard to help grind a bird's food
What is gizzard
200
two kinds of beaks of water birds
What is round, flat beaks and long, sharp beaks
200
when did the first mammals appear in the fossil record
What is more than 225 million years ago
200
rodents use their sharp incisors for this
What is gnaw and chew
200
a mammal that carries and nourishes its young in a pouch
What is marsupial
300
this is used during the process of brooding to keep a bird's eggs warm
What is body heat
300
this happens if a perching bird falls asleep while perching on a branch
What is the feet remained closed around the branch
300
the length of time that a young mammal stays with at least one parent
What is until the young mammal is grown
300
three characteristics of primates
What is eyes face forward, five fingers on each hand and five toes on each foot, and flat fingernails instead of claws
300
a platypus uses its bill to do this
What is search for food in muddy water
400
the faster a bird flies, the greater the ___________
What is lift
400
flightless birds to this to move around instead of flying
What is run or swim
400
the flat, grinding back teeth
What is molars
400
the amount of time dugongs and manatees spend in the water
What is all of their time
400
the size of a newborn kangaroo
What is as small as a bumblebee
500
the main difference between precocial and altricial chicks
What is precocial are covered in down feathers and altricial have no feathers
500
compare perching birds to birds of prey
What is perching birds have claws that automatically close around branches and birds of prey have sharp talons
500
name the four things that milk is made of
What is water, proteins, fats, and sugars
500
a group of fish-eating ocean mammals that are also carnivores
What is pinnipeds
500
the two kinds of monotremes
What is echinads and the platypus