Answers Environmental Science 2025-2026Global Connection: Why Invasive Species Thrive

Global Connection: Algal Blooms Answers

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How does climate change lead to an increase in algal blooms?

Decreased temperatures lead to an increase in phytoplankton growth.

Increased levels of carbon dioxide, a greenhouse gas, leads to increased phytoplankton growth.

Increased pollution leads to lower levels of nutrients in aquatic ecosystems and therefore an increase in phytoplankton growth.

Decreased water levels caused by climate change lead to an increase in phytoplankton growth.

Which of the following is a negative effect of algal blooms on the environment?

transport of carbon to the bottom of the ocean

production of oxygen

consumption of water’s oxygen

large source of energy

Which of the following does not lead to an increase in phytoplankton reproduction?

increased nutrient availability

increased sunlight

increased oxygen levels

increased levels of carbon dioxide

Which of the following is not a way in which humans directly impact algal bloom production?

industrial pollution

wastewater discharge

fertilizer in aquatic ecosystems

fishing

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