A Causal Hypothesis

question 29

Multiple Choice

A causal hypothesis

• A)has no link to time order.
• B)has at least ten variables.
• C)specifies how the variables are connected.
• D)has a null hypothesis involved.

---

Definitions:

Different Species

Distinct groups of organisms that are classified separately due to important differences in physical, genetic, or behavioral traits.

Embryology

The branch of biology dealing with the study of embryos and their development.

Common Descent

A principle of evolutionary biology that suggests all organisms on Earth are descended from a common ancestor.

Charles Darwin

The 19th-century naturalist who proposed the theory of evolution by natural selection, revolutionizing our understanding of life on Earth.