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xxiii

Table of Contents

Careers in Biology

 Add   6   Weed/Pest Control Technician  154  

 xxiii

Careers in Biology

Add   38   Midwife  1046  

7

Paragraph 2 line 3

 earthworms

earthworm

13

Paragraph 1 line 4

standard by

group in

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Assessing Knowledge and Skills Paragraph 1 line 3 and 4

 … control group and in an experimental group to which fertilizer had been added.

… control group at 18º C and in an experimental group at 25ºC.

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Interpreting Data 1. a

beans

seeds

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Interpreting Data 1 b.

Fertilized beans germinate faster.

Seeds germinate faster at warmer temperatures

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Interpreting Data 1. c

 Fertilization of beans requires water.

Fertilization of seeds requires

heat.

31

Interpreting Data  1. d

Beans make their own fertilizer.

Seeds germinate when freezing.

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Interpreting Date 3. c

fertilizer

temperature

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Section 2.1 Opening paragraph

As shown in the photograph,…

As shown in the photographs,…

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Opener         figure caption line 3.

Wildlife rehabilitators released a falcon (inset).

A wildlife rehabilitator releases an owl (inset).

37

Paragraph 1 line 14

The people…

Some people…

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Figure 2.17

Replace butterfly with grasshopper in illustration

New Figure 2.17  art

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Figure 2.18 caption

Pyramid of energy Notice that …

Pyramid of energy  Each bar in the pyramid represents energy available with in a trophic level. Notice that energy decreases as the trophic level increases.

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Figure 2.19

Pyramid of numbers 

Notice that population…

Pyramid of numbers Each bar in the pyramid represents population size within a trophic level. Notice that population size decreases as the trophic level increases.

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Figure 2.20

Pyramid of biomass   Notice that biomass decreases as the trophic level increases.

Pyramid of biomass Each bar in the pyramid represents the amount of biomass within a trophic level.  Notice that biomass decreases as the trophic level increases.

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MiniLab 2-2  paragraph 1

Detecting Carbon Dioxide Carbon dioxide is a waste chemical given off during respiration. It is a colorless, odorless gas. There are certain chemicals called indicators that can be used to detect this gas. One indicator , called bromothymol blue, will change from its normal blue color to green or yellow if carbon dioxide is present.

Detecting Carbon Dioxide Carbon dioxide is given off during respiration. When carbon dioxide is dissolved in water an acid is formed. Certain chemicals called indicators can be used to detect acids. One indicator called bromothymol blue, will change from its normal blue color to green or yellow if an acid is present.

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Figure 2.22

In the nitrogen cycle, nitrogen is converted from a gas to a compound and back to a gas.

In the nitrogen cycle, nitrogen is converted from a gas to compounds important for life and back to a gas.

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Figure 2.22

Complete cycle in art

New Figure 2.22

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Objective 3

Distinguish among terrestrial biomes.

Distinguish among biomes.