Refer to Figure T and the rear part of a whale and snake. Both have what appear to be a femur and pelvis. These structures have no useful function and may imply both the whale and the snake may have had legs at one time. Which of the following best describes why
these structures provide evidence for evolution? (15.1)
Figure T
whale
snake
o It shows that whales may have evolved from snakes.
It shows that whales and snakes may have evolved from a common legged ancestor
o It shows that marine animals, like whales, evolved much more slowly than land-dwelling animals
It shows that many animals, including whales and snakes evolved to have unused body parts

Ameadow ecosystem includes many species of grasses and small shrubs, several herbivores, and a few carnivores. a fungus colonizes the meadow and kills most of its vegetation. what is most likely to happen to the populations of herbivores and carnivores in the ecosystem? a. the populations of herbivores and carnivores will increase because there will be less competition for chemical energy. b. the populations of herbivores and carnivores will remain stable because the fungus cannot infect these organisms. c. the populations of herbivores will decrease because of vegetation loss, but the population of carnivores will remain stable. d. the populations of herbivores and carnivores will decline because less chemical energy will be stored in the ecosystem.

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.

The big bang theory suggest that the universe is about - 300 million years old - 4.6 billion years old - 30 billion years old - 13 billion years old