A Tornado Rips Through an Area of the Midwest

question 244

Multiple Choice

A tornado rips through an area of the Midwest.Its winds destroy many trees, fields, and crops.Heavy rains flood lowland areas.This situation would be described ecologically as a

• A) stress.
• B) facilitation.
• C) catastrophe.
• D) succession.
• E) disturbance.

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Definitions:

Meiosis

A type of cell division that reduces the chromosomal number by half, leading to the production of gametes in sexually reproducing organisms.

Diploid

An organism or cell having two sets of chromosomes or twice the haploid number, characteristic of most adult forms.

Haploid

A cell or organism having a single set of chromosomes, typically half the normal diploid number, characteristic of gametes.

Cell

The basic structural, functional, and biological unit of all known living organisms, a small compartment enclosed by a membrane that contains the organism's genetic material and the biochemical structures needed to sustain life.