Solved

Directions: Apply the Knowledge You Have Gained from Chapter 4

question 17

Multiple Choice

Directions: Apply the knowledge you have gained from Chapter 4 to select the best answer to the questions about the following reading passage.
"Trees make up an essential part of the earth's ecosystem , but rapid deforestation is having harmful effects on the planet. Deforestation refers to the clearance of forests through logging and burning. The main cause of deforestation is the use of trees for lumber and fuel. Forests are also cut down to make room for farming. But while deforestation can provide a short-term boost to struggling economies, it is also causing harm to the environment. Adverse effects of deforestation include erosion of soil, disruption of the water cycle, loss of biodiversity , and flooding and drought. The most harmful effect, though, may be on the climate. Deforestation leads to a greater accumulation of carbon dioxide in the atmosphere, which in turn may warm the planet."
Look at the words in bold in the reading passage. Which word would come fourth in a dictionary?

Definitions:

Photosystems

Cellular structures in chloroplasts where light energy is converted into chemical energy during photosynthesis.

Pigment

Substances that impart color to materials or organisms; in biological contexts, they absorb certain wavelengths of light and reflect others, visible to the human eye as color.

Chlorophyll

A green pigment found in the chloroplasts of plants, algae, and some bacteria, essential for photosynthesis.