Marine Pests & Threats Crossword Puzzle

QUESTIONS LIST:

• bleaching : the effect of substantial changes of temperature, acidity or light on coral
• turtle : an aquatic reptile especially affected by human impacts
• cruises : large boats that create disturbing noises to ecosystems and meddle with sound reliant animals
• invasive species : an organism that has been introduced to an environment that it is not native to
• ballast : heavy materials (including gravel) used to stabilise water vessels, can cause serious problems if spilled
• crown of thorns : a marine pest in the echinoderm phylum that wreaks havoc on the great barrier reef
• global warming : the planet's temperature rising, mainly due to fossil fuels and greenhouse gases
• endangered : when a species is close to going extinct
• ocean : the large mass of salt water that makes up 70% of our planet's surface
• oil : a petroleum substance that causes suffocation to fish if they eat it
• conservation : attempts to prevent or minimize damage done to wildlife
• overfishing : the act of taking more fish/crustacean than is healthy/sustainable for the ecosystem
• pollution : harmful manmade substances being injected into the environment. is bad