| description | species |
|---|
| The Columbian River's ______ population has dropped by 94% and nine of the _____ species are listed as endangered or threatened. | |
| One of the biggest threats of the Great Lakes. This parasite attaches itself to almost any kind of fish and kills the victim by sucking out its blood. | |
| |
| This type of sea turtle lives along the coasts of Northern Australia and Papua, New Guinea, and are not classified as endangered because they nest in very remote places. | |
| Sea turtles can mistake discarded plastic bags for ____ and choke to death on them. | |
| A large and destructive species that invaded the Great Lakes. It can survive at great depths and tolerate extreme temperatures. | |
| The largest of all sea turtles, and is the only warm-blooded species. They survived the impact of the giant asteroid that probably wiped out the dinosaurs. | |
| This species of dolphin, living in parts of the Mekong River of Southeast Asia, are on the edge of extinction because of high levels of toxic chemicals such as DDT. | |
| The MSY concept has not worked very well because of the difficulty in estimating the populations and growth rates of fish and ____stocks | |
| These highly prolific fish can quickly grow as long as 1.2 meters, weigh up to 50 kg, and they have a voracious appetite. They also have the ability to jump clear of the water. | |
| ____ whales have been classifed as an endangered species since 1975. Some marine biologists fear that there are not enough whales left for the species to recover and avoid extincti | |
| Presently, Japan hunts and kils at least 900 whales a year, including endangered minke, fin, and ___ whales for what it claims are scientific purposes. | |
Periodic Table
Planets from the Sun
Digits of Pi
