"Isotopes" Are Atoms with the Same Number of ________ but Different

question 23

Multiple Choice

"Isotopes" are atoms with the same number of ________ but different number of ________.

• A)electrons,neutrons
• B)neutrons,protons
• C)protons,electrons
• D)protons,neutrons

---

Definitions:

Homo Habilis

Extinct hominin; earliest named Homo species; known only from Africa, where it arose 2.3 million years ago.

Homo Erectus

An extinct species of early human that lived throughout Africa and Eurasia during the Pleistocene Epoch.

Vertebrate Lung

A respiratory organ found in vertebrates that exchanges oxygen and carbon dioxide with the environment.

Fishes

Aquatic, gill-bearing animals that lack limbs with digits, often featuring scales, fins, and diverse forms and life histories.