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Less complex life forms.
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What was the BBC TV series Life on Earth about?
The Life on Earth series shows the presenter David Attenborough travelling around the globe to cover how life has evolved on the planet. It was 13 episodes long.
What shows the order in which vertebrates evolved?
1:fish 2: amphibians 3: reptiles 4: birds 5: mammals
Sentence with the word trace fossils?
a fossil record shows what types of fossils there are
Can you show pictures of human mammals?
The picture above shows human mammals. All humans are mammals.
How many heart chambers are in a dolphin?
The dolphin's heart has four chambers. This characteristic shows that the dolphin evolved from land based mammals, rather than from amphibians, which only have three chambered hearts.
The fossil record is?
a record that shows how fossils have changed over time
Why are some mammals that lay eggs classified as mammals?
Monotremes lay eggs, as do reptiles. Monotremes' limbs go outward (rather than downward) from their main body, which is also true for reptiles. Monotremes lack a corpus callosum (which placental mammals have), as do reptiles. Monotremes and reptiles both have cloacas, while placental mammals have separate openings for urination and defecation. This evidence all shows monotremes to be a link between reptiles and mammals, but we now think that monotremes just evolved from an earlier branching from the mammalian tree of lineage than the marsupials and placental mammals evolved from. Monotremes are not a link between reptiles and mammals.
What shows which characteristics organisms share and when they evolved?
branching diagram
Which observation best shows that limestone was formed from ocean sediments?
The type of fossils
Cetateans whales and dolphins evolved from terrestrial air breating mammals true or false?
Actually, that is true. The fossil record shows that whales, dolphins and other air-breathing mammals that live in the sea did actually evolve from land mammals.Check any book on evolutionary biology for details.Answer:True as said above. Evolutionarily speaking all mammals evolved from the same land dwelling proto-mammal. Later the cetaceans moved back into water to fill up a niche in the aquatic system where they have survived ever since (rather successfully I might add).definitely true.
What diagram shows how animals evolved from common ancestors?
A taxanomic tree.
What evidence is there that whales have formed from land mammals?
Some have the remains of hind legs and a pelvis still inside their bodies. On top of that, land was where mammals evolved.
