Which of the following observations helped Darwin shape his concept of descent with modification?
A) Species diversity declines farther from the equator.
B) Fewer species live on islands than on the nearest continents.
C) Birds can be found on islands located farther from the mainland than the birds' maximum nonstop flight distance.
D) South American temperate plants are more similar to the tropical plants of South America than to the temperate plants of Europe.
E) Earthquakes reshape life by causing mass extinctions.
Difficulties in applying the morphological species concept
The biconcave disk shape of erythrocytes (red blood cells).
Examples of four different types of cells from the body. Although each cell has a cell membrane, nuc
Classification of bones by shape.
Symbolic language may have helped reinforce exclusive sexual relationships within social groups in l
From your experiences in grade school, can you tell if or how your teachers unintentionally helped ...