Research Has Shown That

question 69

Multiple Choice

Research has shown that:

• A)fluctuations in the hormone levels of adolescents lead to marked mood swings.
• B)adolescent boys' mood swings are more noticeable than are the mood swings of adolescent girls.
• C)adolescents are no moodier than are children.
• D)the "storm and stress" of adolescence is more common today than it was 200 years ago.

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Definitions:

Photosynthesizing Bacteria

Microorganisms that convert light energy into chemical energy through the process of photosynthesis.

Terrestrial Plants

Plants that grow on land, as opposed to aquatic (water-based) or epiphytic (growing on other plants) plants.

Primitive Atmosphere

The early atmosphere of Earth, which was very different in composition from the current one, possibly composed of gases such as methane, ammonia, and water vapor.

Photosynthetic Bacteria

Bacteria that are capable of producing their own food through the process of photosynthesis.