The _______ Are an Important and Often Overlooked Group of Organisms

question 15

Multiple Choice

The _______ are an important and often overlooked group of organisms that release nutrients to the soil or water.

• A)producers
• B)heterotrophs
• C)decomposers
• D)tertiary consumers
• E)autotrophs

Understand the use and importance of coding systems in observational research.

Grasp the concept of reactivity in observational research and its effects on findings.

Recognize the limitations of naturalistic and systematic observations in research.

Appreciate the value of thorough and accurate data collection to provide a complete picture of the observed setting.

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Definitions:

Period Of The Zygote

Approximately a 2-week period from the time of fertilization of a human ovum by a sperm to the time of implantation in the uterine wall.

Period Of The Fetus

Lasting from the ninth week of gestation until birth, the time of rapid growth and further differentiation when the reproductive system forms, gains in body weight occur, and the brain and nervous system continue to develop.

Chromosomes

Structures made of DNA and proteins that contain the genetic information of an organism.

Teratogens

Agents that can cause developmental abnormalities or birth defects in a developing fetus when exposed to the mother.