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Invasive species cause most of the worst problems in local ecosystems. The presence of a new species, particularly one at the top of the food chain, can destroy an ecosystem and cause numerous species to become extinct. One species that is causing numerou

Invasive species cause most of the worst problems in local ecosystems. The presence of a new species, particularly one at the top of the food chain, can destroy an ecosystem and cause numerous species to become extinct. One species that is causing numerou 6xpbK

The main issue discussed in the reading passage is zebra mussels, an invasive species, and its damage in local ecosystems. In the lecturer, the professor provides several solutions for this problem. Firstly, according to the reading passage, that zebra mussels attach themselves to water pipes block pipes, some of which are used to bring drinking water to cites. The professor discusses decontaminate boats in American lakes and rivers as a step to address this problem. She mentions this because zebra mussels stick themselves to the bottoms of ships to travel. Thus, the ships should be clean by sea water to kill zebra mussel. Furthermore, the mussels can survive out of water several days, so other ship parts out of water like anchor chains should be also decontaminated. Overall, this solution is able decrease the number of zebra mussel and opening the pipes. Secondly, the another problem is scientists are unable to discover safe method to kill zebra mussel because it has very few natural enemies. The professor indicates that there are some kind of species like duck, bird or fish which eat zebra mussel. However, the number of these species is not enough to make impact on the number of zebra mussel. Therefore, the lecturer suggests that the scientists should increase the number of these predators which hunt the mussel for food. In conclusion, this solution is an environmentally-safe method to eliminate zebra mussel.

The main issue discussed in the reading passage is zebra You use this word too often, consider replacing it withclamcrustaceanmollusksnailscallopconch
mussels
, an invasive species, and its damage in local ecosystems. In the lecturer, the professor provides several solutions for this problem.

Firstly
, according to the reading passage, that zebra You use this word too often, consider replacing it withclamcrustaceanmollusksnailscallopconch
mussels
 attach themselves to You use this word too often, consider replacing it withdrinkrain
water
 pipes block pipes, This phrase/word is too simple and can be replaced with:a number of
some
 of which are This phrase/word (depending on the context) can be potentially replaced with :exploited
used
 to bring drinking You use this word too often, consider replacing it withdrinkrain
water
 to cites. The professor discusses decontaminate boats in American lakes and rivers as a step to address this problem. She mentions this This phrase/word is too simple and can be replaced with:due to the factin light of the fact thatowing to the fact that
because
 zebra You use this word too often, consider replacing it withclamcrustaceanmollusksnailscallopconch
mussels
 stick themselves to the bottoms of ships to travel. Thus
, the ships should be clean by sea You use this word too often, consider replacing it withdrinkrain
water
 to kill zebra You use this word too often, consider replacing it withclamcrustaceanmollusksnailscallopconch
mussel
. Furthermore
, the You use this word too often, consider replacing it withclamcrustaceanmollusksnailscallopconch
mussels
 can survive out of You use this word too often, consider replacing it withdrinkrain
water
 several days, This phrase/word is too simple and can be replaced with:consequently
so
 other ship parts out of You use this word too often, consider replacing it withdrinkrain
water
 like anchor chains should be also
 decontaminated. Overall
, this solution is able decrease the You use this word too often, consider replacing it withsumtotalfigurestatistic
number
 of zebra You use this word too often, consider replacing it withclamcrustaceanmollusksnailscallopconch
mussel
 and opening the pipes.

Secondly
, the another problem is scientists are unable to discover safe method to kill zebra You use this word too often, consider replacing it withclamcrustaceanmollusksnailscallopconch
mussel
This phrase/word is too simple and can be replaced with:due to the factin light of the fact thatowing to the fact that
because
 it has This phrase/word is too simple and can be replaced with:extremelyimmenselysupremelysuperb
very
 few natural enemies. The professor indicates that there are This phrase/word is too simple and can be replaced with:a number of
some
Possible agreement error. Did you mean "kinds"?kinds
kind
 of species like duck, bird or fish which eat zebra You use this word too often, consider replacing it withclamcrustaceanmollusksnailscallopconch
mussel
. However
, the You use this word too often, consider replacing it withsumtotalfigurestatistic
number
 of these species is not This phrase/word is too simple and can be replaced with:abundance
enough
 to This phrase/word (depending on the context) can be potentially replaced with :createconstructmanufactureproduce
make
 impact on the You use this word too often, consider replacing it withsumtotalfigurestatistic
number
 of zebra You use this word too often, consider replacing it withclamcrustaceanmollusksnailscallopconch
mussel
. Therefore
, the lecturer suggests that the scientists should increase the You use this word too often, consider replacing it withsumtotalfigurestatistic
number
 of these predators which hunt the You use this word too often, consider replacing it withclamcrustaceanmollusksnailscallopconch
mussel
 for food. In conclusion
, this solution is an environmentally
-safe method to eliminate zebra You use this word too often, consider replacing it withclamcrustaceanmollusksnailscallopconch
mussel
. 