Why is a pyramid an effective model for quantifying energy flow

Which of the following statements is NOT true of mitosis? A. It is a period of active division. B. It is a process that is part of the cell cycle. C. During the process, the nucleus of the cell does not undergo any change. D. It has four phases.

A solution that is a 4 on the pH scale is a

Jennifer has two times as many quarters as dimes the total value of the coins is $4.20. how many of each coin does she have?

Identify if this is an example of primary or secondary succession: Growth in an agricultural field no longer farmed.

Most people are lactose intolerant as adults, but nearly everyone produces sufficient lactase as an infant. however, in some cases, genetic mutations can occur that make an infant lactose intolerant.

Genes that have more than two alleles are epistastic. multiple allelic. autosomes. none of the above

What are the three main parts of the scientific process? a) predicting, inferring, and drawing conclusions b) activating knowledge, and inferring c) observation, experimentation, and scientific d) data collection, analysis, and hypothesis formation

A calorie is also referred to as a?

List four possible methods for sterilizing ballast

Mitochondria are the ___ of the cell