Biology, 03.04.2020 00:35 dogerboy8380

The order Cetacea includes modern-day whales, dolphins, and porpoises. These marine mammals share common characteristics that have led scientists to make a conclusion about their evolutionary history. Cetaceans:
lack gills and must breathe air
give birth to live young rather than lay eggs
have fin bones that are similarly shaped to limb bones
have spines that flex up and down rather than side to side
The characteristics of cetaceans provide evidence that
A.
the bodies of their ancestors never changed.
B.
the theory of evolution is incorrect.
C.
they evolved from land mammals.
D.
they evolved from air-breathing fish.
t

Answers: 3

Show answers

Another question on Biology

Biology, 22.06.2019 03:40

How can active reading strategies you? o a. they can you get into better physical shape. o b. they can you read fewer science articles. o c. they can you understand what you read. o d. they can you avoid reading altogether.

Answers: 3

Answer

Biology, 22.06.2019 07:00

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).

Answers: 1

Answer

Biology, 22.06.2019 13:00

[34 points awarded to the best answer, use facts and/or data] 1.) what's the likelihood of thunderstorms occurring in the state of maryland? {this question is for a project for science, use facts and/or data and explain why . 34 points to the best answer]

Answers: 1

Answer

Biology, 22.06.2019 13:50

Interactions between organisms and their environment impact the organism’s overall population. the jaguar panthera onca is the largest cat in north america. it is found in areas across the southwest, including arizona, new mexico, and texas. it is a carnivore that has powerful jaws and sharp teeth and preys on fish, turtles, tapirs, and many smaller mammals. which shows the relationship between the jaguar and turtles?

Answers: 3

Answer

You know the right answer?

The order Cetacea includes modern-day whales, dolphins, and porpoises. These marine mammals share co...

Questions