Who First Postulated That Continents Drift Around Over Earth's Surface

question 271

Multiple Choice

Who first postulated that continents drift around over Earth's surface?

• A) Charles Darwin
• B) Alfred Wegener
• C) J. Tuzo Wilson
• D) James Van Allen

Recognize the structural and functional relationship between the hypothalamus and the pituitary gland.

Identify specific cells associated with hormone production and their histological characteristics.

Describe the feedback mechanisms that regulate hormone secretion.

Identify and understand different typefaces and their applications.

---

Definitions:

Hybrid Sterility

A condition where offspring from the cross between two different species are infertile, preventing them from producing offspring.

Postzygotic Barrier

One of several reproductive isolating mechanisms that prevent gene flow between species after fertilization has taken place (e.g., hybrid inviability, hybrid sterility, and hybrid breakdown). Compare with prezygotic barrier.

Interbreeding

The mating of organisms within the same species, which can lead to the sharing of genetic traits and increased genetic similarity.

Habitat Isolation

A form of reproductive isolation where different species live in different habitats and do not meet, thus preventing mating.