Marine Science Unit 1 Topic 1

What are the different types of marine ecosystems?

• Desert ecosystems

• Tropical rainforests

• The different types of marine ecosystems include coral reefs, estuaries, open ocean, and deep sea.

• Freshwater lakes

Explain the concept of intertidal zones in marine ecosystems.

• Intertidal zones are the areas of the shore that are exposed to air at low tide and covered with seawater at high tide.

• Intertidal zones are the deepest parts of the ocean where sunlight cannot reach.

• Intertidal zones are the regions of the ocean where marine life cannot survive.

• Intertidal zones are the areas of the shore that are always covered with seawater.

What are the factors that contribute to marine biodiversity?

• Wind speed, water depth, and fish population

• Sunlight, pH level, and pollution

• Soil type, air pressure, and plant diversity

• Temperature, salinity, nutrient availability, and habitat complexity

Discuss the importance of coral reefs in marine biodiversity.

• Coral reefs provide habitat for a wide variety of marine species.

• Marine biodiversity is not affected by coral reefs

• Coral reefs only provide habitat for a few marine species

• Coral reefs are not important for marine biodiversity

What are the threats to marine biodiversity?

• Overfishing, pollution, habitat destruction, climate change, and invasive species

• Oil spills, renewable energy, marine protected areas

• Urbanization, soil erosion, freshwater conservation

• Global warming, deforestation, air pollution

Explain the concept of keystone species in marine ecosystems.

• Keystone species play a critical role in maintaining the balance and diversity of marine ecosystems.

• Keystone species are only found in the deep sea

• Keystone species have no impact on marine ecosystems

• Keystone species only exist in freshwater ecosystems

What are the different levels of marine food chains?

• Octopus, squid, jellyfish, starfish

• Primary producers, primary consumers, secondary consumers, and tertiary consumers

• Seaweed, algae, plankton, kelp

• Fish, sharks, whales, dolphins

Discuss the role of phytoplankton in marine ecosystems.

• Phytoplankton play a crucial role in providing food and oxygen for marine ecosystems.

• Phytoplankton only provide food for marine ecosystems

• Phytoplankton have no role in marine ecosystems

• Phytoplankton are harmful to marine ecosystems

How do human activities impact marine ecosystems and biodiversity?

• Human activities can negatively impact marine ecosystems and biodiversity.

• Human activities have no impact on marine ecosystems and biodiversity.

• Marine ecosystems and biodiversity are not affected by human activities.

• Human activities have a positive impact on marine ecosystems and biodiversity.

Explain the concept of ocean acidification and its impact on marine life.

• Ocean acidification is the process of the ocean becoming more acidic due to the absorption of carbon dioxide from the atmosphere. This can have detrimental effects on marine life, particularly on organisms with calcium carbonate shells or skeletons.

• Ocean acidification has no impact on marine life and is a natural process.

• Ocean acidification is the process of the ocean becoming less acidic due to the absorption of carbon dioxide from the atmosphere.

• Marine life actually benefits from ocean acidification as it provides more nutrients for growth.