Old Keystone
Biology Question. Help!?
1. If an ecosystem lost a keystone species, which outcome would you expect?
A. A new keystone species would replace the old keystone species.
B.The oxygen supply in the ecosystem would be depleted.
C.The population numbers of other species would change dramatically.
D.The temperature of the ecosystem would increase.
2. The Gulf of Mexico provides 72 percent of the shrimp harvested in U.S. waters. Those populations are at risk because of the dead zone in the Gulf of Mexico. Which statement best describes this dead zone?
A.It is a zone of ocean water that has almost no oxygen.
B.It is a zone of ocean water that has almost no carbon dioxide.
C.It is a zone that formed when it lost its keystone species.
D.It is a zone that's been depleted by sea urchins.
D and D
do your own home work
old Keystone 8mm Movie Projector operating
|
|
Deni 6000 Ice Crusher $26.96 Exotic drinks are no longer off-limits at home cocktail parties when the bar area is equipped with this automatic ice crusher. Simply feed ice cubes through the top into the appliance's ice chamber and then press the power switch to grind cubes into chips. Crushed ice falls into the transparent container at the bottom of the unit, ready for making frozen margaritas, piña coladas, mojitos, or just... |
|
|
Weston Bow Scale $26.99 Precision Weston Bow Scale, PRICED RIGHT! How much "pull" is your compound bow set at? This Scale is the only way to know for sure. Measures in 1 lb. increments up to a maximum draw weight of 90 lbs. Heavy-duty corrosion resistant aluminum housing with stainless steel components. Includes nylon carrying case with belt loop. Measures 11 1/2" long. Weighs 9 ozs. Get yours here for LESS! Order yours ... |
|
|
Deni Automatic Ice Cream Makers with Candy Crusher - Fully automatic and easy to operate, NO salt or ice needed- New canister freezes in 8 hours- Candy crusher dispenses crushed candy into your favorite ice cream- Lid fits on unit and canister- Compact to fit anywhere- Makes up to 1.5 quarts- No long waiting, freezes ingredients in less than half an hour- Make frozen drinks (i.e. Pina coladas, frozen daiquiris, or icy thick margaritas)- Turn fruit... |
|
|
Buck 112 Ranger, Lockback Folding Knife $34.20 Smaller version of Buck's famous Folding Hunter. Brass bolsters liners and rivets. Classic wood handle. Sheath included. Weight: 5.6 oz.Handle Material: Natural WoodgrainBlade Steel: 420HC Length Closed: 4 1/4"Blade Length: 3"Sheath Included... |
|
|
Leviton 690-W 15 Amp, 2-Gang Recessed Device with Duplex Receptacle and QuickPort Plate, Residential Grade, White $13.49 White Double Gang Recess Device... |
|
|
Arlington TVB613-1 Recessed TV Outlet Box with Paintable Trim Plate, White, 4-Gang $11.98 Add a professional finish to your mounted flat-screen TV installation with the Arlington Recessed TV Box. Whether you're a professional electrician or a do-it-yourselfer, this outlet box is easy to install. It features a space-saving design that simplifies in-wall wiring and keeps messy cables and wires out of sight. And because the TV Box is designed to accommodate both power and low-voltage devi... |
|
|
Comedy Classics 50 Movie Pack Collection $19.98 50-Movie Collection.... |
|
|
First Kings of Comedy Collection (The Golden Age Of Comedy / When Comedy Was King) $9.95 Studio: Genius Products Inc Release Date: 05/13/2008 Run time: 160 minutes... |
|
|
Luxor Professional The Wet Brush Detangling Shower Brush Hair Brushes Buy Luxor Professional Hair Brushes & Combs - Luxor Professional The Wet Brush Detangling Shower Brush Model No. B830W (Assorted Colors). How-to-Use: ... |
|
|
Belkin 6 Position Keystone Plastic Face/wall Plate Unloaded $1.99 pTired of your old cracked networking faceplate? Give your network a facelift with a Belkin Keystone Faceplate. This attractive plate will perfectly blend into your home or office decor, and can hold a multitude of jacks./p... |