What piece of evidence would cause scientists to decide that the cell theory would need to be revised?

What is the largest percentage of land use in the United States?

Which biome has stems for water storage, extensive root system for absorbing water, and modified leaves (spines) ?

Damage to which of the following brain structures may cause the inability to detect the emotional significance of facial expressions, especially those demonstrating fear? A. Hippocampus B. Amygdala C. Hypothalamus D. Cerebellum

A mutation that results in a single amino acid substitution in the active site of an enzyme

Refers to a type of schema that involves a familiar sequence of activities

Explain why multicellular organisms require a ventilation system? include reasons on surface area to volume ratio cells depp within the body and number of cells

After teaching a group of students about the standard childhood immunizations given today, the instructor determines that the students need additional teaching when they identify which as a common disease for which immunizations are given?

Around a pond, there is a small population of turtles. Some of them have solid dark brown shells and some of them have yellow and brown shells with yellow spots. Spotted shells are dominant over solid shells.

Catharine beecher believe that woman should spend their energy

A species of cactus has spines. How would biologists explain how a species of cactus with spines evolved from an ancestral cactus species without spines?