The four-field system allows for question 46 options: a. unprecedented population growth. b. minimal land left fallow. c. replaced soil nutrients. d. provided food for animals.

Types of scientific inquiry that biologist engage in that cannot be completely controlled

What's wrong with this ecological pyramid? (multiple choice)1. secondary consumers should be at the bottom of the pyramid2. the sun has an arrow leading to decomposers 3. primary consumers should come after the sun4. energy retained should increase from the bottom to the top5. the sun should be at the bottom of the pyramid

Which genetic disorders, caused by an extra x chromosome (xxy), is characterized by a lack of testicular development in males, effeminate features, possible mental impairment, and a thin stature?