Why is a cuticle a useful adaptation in plants but not algae?

The health, management and conservation of biodiversity, is a challenge facing ecosystems worldwide. the major factors that affect the health and function of the great barrier reef are climate change and pollution. which question investigates the effects of a biotic factor on the reef ecosystem?

Hummingbirds drink nectar from flowers, while robins eat plant seeds. what does this reduce?

What are some natural processes that represent physical and chemical changes?