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SLCC ENSC 1000 Exam 2 | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions
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SLCC ENSC 1000 Exam 2 | Questions & Answers (100 %Score) Latest Updated 2024/2025 Comprehensive Questions A+ Graded Answers | With Expert Solutions

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  • August 2, 2024
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  • 2024/2025
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  • slcc ensc 1000 exam 2 questions answers 100

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SLCC ENSC 1000 Exam 2 | Questions & Answers (100 %Score) Latest Updated 2024/2025
Comprehensive Questions A+ Graded Answers | With Expert Solutions


Thomas Malthus - wroteAn Essay on the Principle of Populationin which he showed that
human populations increase exponentially.

Karl Marx - view, that population growth resulted from poverty, resource depletion,
pollution, and other social ills

Malthus vs. Marx - Malthus - poverty causes overpopulation
Marx - overpopulation causes poverty

Demography - encompasses vital statistics about people such as births, deaths,
distribution, and population size

Organisms considered in imminent danger of extinction are called? - endangered

The number of children born to an average woman in a population during her life? -
Total Fertility Rate

These are chemicals used to kill biological pests? - pesticides

Crude Birth Rate - Number of births in a year per thousand. (Not adjusted for population
characteristics such as number of women of childbearing age.)

Total Fertility Rate - number of children born to an average woman in a population
during her life

Zero Population Growth - Occurs when births plus immigration in a population equal
deaths plus emigration. ZPG Is a rate of 2.1 children per couple, not 2.0, because some
people do not have children and some children do not survive to reproductive age.

Crude Death Rate - The number of deaths per year per 1,000 people.

Natural Increase - crude birth rate minus crude death rate

Total growth rate - includes immigration, emigration, births and deaths.

the primary cause of most population growth in last 300 years. - Declining mortality

Family Planning - allows couples to determine the number and spacing of their children

Health - a state of complete physical, mental, and social well-being (not just the
absence of disease or infirmity)

, Disease - an abnormal change in the body's condition that impairs physical or
psychological function

Disability-adjusted life years (DALYs) - combine premature deaths and loss of healthy
life resulting from illness or disability

Pathogens - disease-causing organisms. They include:-Viruses-Bacteria-Protozoans-
Parasitic worms including flukes

Antibiotics - chemicals that kill or inhibit the growth of bacteria

Toxicology - the study of poisons and their effects on living systems.

Dangerous chemicals are divided into two broad categories: - Toxic and Other Hazards

Toxic chemicals - known poisons that damage or kill cells/tissues

Other Hazards (chemicals) - dangerous but not toxic

Ecotoxicology - deals with the interactions, transformation, fate, and effects of natural
and synthetic chemicals in the biosphere.

Allergens - substances that activate the immune system

Antigens - substances that are recognized as foreign by white blood cells and stimulate
the production of specific antibodies

Antibodies - proteins produced by our bodies that recognize and bind to foreign cells or
chemicals

Immune System Depressants - pollutants that depress the immune system instead of
activating it.

Endocrine Disrupters - disrupt normal hormone functions

Neurotoxins - metabolic poisons that specifically attack nerve cells; most are extremely
toxic and fast acting.

Different types of Neurotoxins - Heavy Metals, Anesthetics and Chlorinated
Hydrocarbons, and Organophosphates and Carbamates

Heavy Metals - kill nerve cells.

Anesthetics and Chlorinated Hydrocarbons - disrupt nerve cell membranes

Organophosphates and Carbamates - inhibit signal transmission between nerve cells.

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