The zebra mussel is a shellfish native to europe. during the early 1900's, it was accidentally brought to the united states in the ballast of a ship traveling to the great lakes. it has no predators in the great lakes.

what impact are zebra mussels likely to have on food chains in the great lakes?
a) they will have no real effects on the food chain, since they are from europe.
b) they will compete with native shellfish and clams and hurt their populations.
c) they will allow fish populations to expand, because they will be used as food.
d) they will cause the entire food chain to crash, since they do not fit into the original food chain.

Which characteristics can be used to differentiate star systems? check all that apply.

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.

Be sure to answer all parts. the following equilibrium constants were determined at 1123 k: c(s) + co2(g) ⇌ 2co(g) k'p = 1.30 × 1014 co(g) + cl2(g) ⇌ cocl2(g) k''p = 6.00 × 10−3 calculate the equilibrium constant at 1123 k for the reaction: c(s) + co2(g) + 2cl2(g) ⇌ 2cocl2(g) 4.68 × 10 9 (enter your answer in scientific notation.) write the equilibrium constant expression, kp: