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1.1 The study of life Read Online
Viewed from space, Earth offers no clues about the diversity of life forms that reside there. The first forms of life on Earth are thought to have been microorganisms that existed for billions of years in the ocean before plants and animals appeared. The mammals, birds, and flowers so familiar to us are all relatively recent, originating 130 to 200 million years ago. Humans have inhabited this planet for only the last 2.5 million years, and only in the last 200,000 years have humans started looking like we do today.
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Question: Moderate population density
Choices:
Somewhere in the middle
Question: Correlation
Choices:
How 2 variables relate to each other
Question: Demographic Trends
Choices:
Factors that describe changes in the general population
Question: Census
Choices:
A survey that is conducted ever 10 years. It collects information about: Age Ethnic background Language Family size Other factors related to the people who live in that particular area
Question: Death rate
Choices:
Number of people who die each year for every 1000 people in a country
Question: Dense population
Choices:
Countries that have a large population living in a small area
Question: Doubling time
Choices:
How long it takes for a country to double in population
Question: Birth Rate
Choices:
Number of babies born each year for every 1000 people in a country
Question: Low population density
Choices:
Countries that are large in area but have small populations
Question: Demography
Choices:
The study of human population
Question: Industrial revolution
Choices:
The period in the 1700s and the 1800s that changed from a farm society to a machine/factory society
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