21. Evolution

The Laetoli footprint trail indicates what about the foot of Australopithecus?

Which of the following was likely an important factor in triggering the Cambrian Explosion?

Why have many animals developed horns and antlers?

Which statement most accurately describes the evolutionary relationships among the three domains of life?

In evolutionary biology, which term refers to more primitive features, such as teeth and tails, that appear in ancestral forms but may be lost or modified in descendants?

Which of the following is a key difference between plants and animals in terms of their evolutionary adaptations?

Which movie famously depicted a fossilized mosquito preserved in amber as a key plot element?

Which of the following best describes what happens when a small star dies?

In the context of evolutionary biology, which of the following best represents the concept of 'Sugarcandy Mountain' as described in George Orwell's 'Animal Farm'?

Where did the first vertebrates evolve?

What was the "oxygen revolution," which took place approximately 2.3 billion years ago?

Which group is considered to be the closest living relative of animals?

What is one characteristic of Neanderthals?

Based on the plant fossil record, which of these events likely occurred most recently?

Which of the following statements about diploblasts and triploblasts is false?