Question

1. what adaptation allows many marine species to blend into their surroundings to avoid predators? a) migration b) bioluminescence c) symbiosis d) camouflage 2. which of the following is a key benefit of biodiversity in marine ecosystems? a) increased ocean temperature b) improved fishing practices c) enhanced ecosystem resilience d) greater habitat destruction 3. what is a major factor influencing species diversity in marine habitats? a) urban development b) habitat complexity c) land - based pollution d) agricultural practices 4. which marine area is known as a biodiversity hotspot, supporting the highest diversity of coral? a) the red sea b) the caribbean sea c) the coral triangle d) the mediterranean sea 5. what is one of the primary threats to marine biodiversity mentioned in the reading? a) overfishing b) increased tourism c) improved technology d) decreased ocean salinity

Explanation:

1. Camouflage is the adaptation that helps marine species blend into their surroundings to avoid predators. Migration is movement, bioluminescence is light - production, and symbiosis is a close relationship between species.
2. Biodiversity in marine ecosystems enhances ecosystem resilience by providing redundancy and functional diversity. Increased ocean temperature is a negative impact, improved fishing practices are a human - related activity not a direct benefit of biodiversity, and greater habitat destruction is a negative factor.
3. Habitat complexity is a major factor influencing species diversity in marine habitats as it provides different niches. Urban development, land - based pollution, and agricultural practices have indirect impacts but habitat complexity is more directly related.
4. The Coral Triangle is known as a biodiversity hotspot supporting high coral diversity. The other seas mentioned have biodiversity but not at the level of the Coral Triangle for corals.
5. Overfishing is a primary threat to marine biodiversity as it can deplete fish populations and disrupt food webs. Increased tourism, improved technology, and decreased ocean salinity are not the most primary threats compared to overfishing.

Answer:

1. d) Camouflage
2. c) Enhanced ecosystem resilience
3. b) Habitat complexity
4. c) The Coral Triangle
5. a) Overfishing