The water hyacinth is an invasive species that can spread extremely fast, blanketing a water surface in a very short period of time. it can limit boat traffic, swimming, and fishing, and it can deprive native plants and animals of sunlight and oxygen, thus reducing the local biodiversity. this situation demonstrates

a.) how migratory patterns change in response to alterations in an ecosystem
b.) the effects of symbiosis
c.) the effects of local evolution or migration on an ecosystem
d.) how changes in biodiversity impact an ecosystem

Correct D). How changes in biodiversity impact an ecosystem

The Water Hyacinth is an unwanted plant and is considered a nuisance plant as it causes a physical, ecological and economic problem. It affects the growth of the aquatic ecosystem.

It forms a thick layer on the water surface and prevents the photosynthesis, it is also responsible to cause the decreased level of oxygen in the water and affect the lives of other organism living in the water.

It clearly shows that how the effect of local evolution on the ecosystem and how the changes in the biodiversity impact an ecosystem.  

The correct answer is D. How changes in biodiversity impacts an ecosystem.

Water hyacinth is termed as a plant which is free-floating aquatic perennial.

Water hyacinth rises above surface of water.

enzyme active site and substrate specificity

enzymes bind with chemical reactants called substrates. there may be one or more substrates for each type of enzyme, depending on the particular chemical reaction. in some reactions, a single-reactant substrate is broken down into multiple products