Which sentence is correct? The observers up front were asked to set down so that the ones in the back could see. The observers up front were asked to sit down so that the ones in the back could see.

What are trans fats? Why are they bad?

Identify a specific example where the cell wall structure has aided the survival of a plant in its natural habitat.

What type of mutation results when bases are added to a gene A. frameshift B. Nondisjunction C. silent D. missense

Decide whether each statement about hormones is true or false. TrueFalse Homeostasis is regulated by two systems; the nervous system and the endocrine system. TrueFalse Hormones released by the endocrine system are secreted through ducts.

Juliet just ran a 100-meter race. She's experiencing severe pain in her leg muscles. What is the probable reason for this?

Which describes the habitat of a frog?

The size of a population refers to the

An electric current will always follow a. the path of least resistance. b. a path toward the north pole. c. a path toward the south pole. d. the path that leads through insulators.

What are some questions that biologists might ask about the living things they study?

A volcanic eruption causes melting of glaciers. Which of these Earth systems interact during this event? A atmosphere and biosphere B atmosphere and hydrosphere C geosphere and cryosphere D geosphere and biosphere