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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.
Question: Earth has many different kinds of forests with all kinds of trees. What is a characteristic of trees that live in the deciduous forest?
Choices:
They all lose their leaves in the fall
They are all tall
They are all very tall
All the above
Question: The average annual temperature in a deciduous forest is?
Choices:
80 degrees
66 degrees
30 degrees
50 degrees
Question: What is the first zone ?
Choices:
The ground zone
The small tree and sapling zone
The shrub zone
The tree stratum zone
The herb zone
Question: What happens to the leaves in the spring?
Choices:
They get larger
They regrow
They change color
They fall off
Question: What is the second zone?
Choices:
Weird zone
The small tree and sapling zone
The shrub zone
Herb zone
Question: What is the first zone ?
Choices:
The ground zone
The small tree and sapling zone
The shrub zone
The tree stratum zone
The herb zone
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