Flight has been an important innovation for animals and has led to adaptive radiations in both birds and insects. For birds, what additional fitness benefits have been gained through adaptations for flight? A. Reductions in reproductive organs has led to the production of eggs with a larger allantois, increasing nutrients for their offspring. B. Birds rely on metabolic heat to stay warm and feathers help birds regulate their body temperature. C. The lack of teeth means that birds have become dietary specialists, optimized for eating exclusively grains (land-dwellers) or fish (shore-dweller). D. The relative metabolic rate (per kg) is lower in lighter vertebrates, which means that birds need loss food than other reptiles of a similar size.
Answers: 1
Biology, 21.06.2019 20:00
!if we removed the wolf, snake, and hawk from this food web, what best explains the impact it would have? a) the number of producers would increase. b)the number of decomposers would increase. c)the number of primary consumers would increase. d)the numbers of primary consumers would decrease.
Answers: 1
Biology, 22.06.2019 10:30
In a lab, scientists grew several generations of offspring of a plant using the method shown. what conclusion can you make about the offspring? a. they formed from meiosis and mitosis. b. they have half the number of chromosomes as their parent. c. they have low genetic variability among them. d. they will be able to reproduce only after they grow flowers.
Answers: 2
Biology, 22.06.2019 10:30
In order to study genetic mutations, scientists must study genetic material. which statement describes the genetic material scientists are most likely studying? a) they study alleles that contain chromosomes, which are rna.b) they study alleles that contain genes, which are chromosomes.c) they study chromosomes that contain genes, which are dna segments.
Answers: 1
Flight has been an important innovation for animals and has led to adaptive radiations in both birds...
History, 27.08.2020 06:01
Mathematics, 27.08.2020 06:01
Mathematics, 27.08.2020 06:01
Arts, 27.08.2020 06:01
Biology, 27.08.2020 06:01
Mathematics, 27.08.2020 06:01
Geography, 27.08.2020 06:01
Social Studies, 27.08.2020 06:01
Mathematics, 27.08.2020 06:01
Mathematics, 27.08.2020 06:01
Medicine, 27.08.2020 06:01
Mathematics, 27.08.2020 06:01