Which of the following statements is correct regarding the evolution of flight?
a. the evolution of feathers on wings was initially to support fight in non-avian dinosaurs
b. the bottom-up theory postulates that the evolution of flight started with the use of wings to glide from branch to branch.
c. the top-down theory postulates that the evolution of flight started with flapping to aid in generating lift off the ground.
d. the wing-assisted incline running theory postulates that wings were initially used to maintain balance while climbing up slopes.
Answers: 2
Biology, 22.06.2019 00:10, andrea1704
Asap what occurs after cytokinesis is completed at the end of meiosis 1?
Answers: 1
Biology, 22.06.2019 04:00, paigefields2578
The wings of insects, birds, and bats evolved independently but carry out similar functions. this is an example of a. analogous structures. b. embryonic structures. c. vestigial structures. d. homologous structures.
Answers: 1
Biology, 22.06.2019 09:30, dooboose15
Along what geographical feature are most of the oil producing regions located
Answers: 1
Biology, 22.06.2019 11:10, allisonpierce1787
Which of these statements is true about autotrophs, but not heterotrophs? a. they use sugar and oxygen to make carbon dioxide and water. b. they use chlorophyll and oxygen to make carbon dioxide and water. c. they use sunlight, water, and carbon dioxide to make sugars. d. they use sunlight, water, and oxygen to make chlorophyll.
Answers: 1
Which of the following statements is correct regarding the evolution of flight?
a. the evolu...
a. the evolu...
Biology, 20.08.2019 23:30
English, 20.08.2019 23:30
Physics, 20.08.2019 23:30
History, 20.08.2019 23:30
Mathematics, 20.08.2019 23:30
Mathematics, 20.08.2019 23:30
Biology, 20.08.2019 23:30
Biology, 20.08.2019 23:30