B, reservoirs.
Dams are used to conserve water and to convert it into hydroelectric energy.
Aqueducts are used to move water from one source to another, think sort of like irrigation.
Valleys are plains of grass, has nothing to do with water.
Reservoirs however, are used to <u>reserve</u> water, <u>Reserve</u>oirs.
<span>Like
animals, plants must maintain an internal balance, or homeostasis. All the
living organisms must be able to maintain homeostasis in their environment and
also to themselves to avoid dysfunction in their bodily system and continue to
adapt tp the dynamic surroundings.</span>
flowers attract insects that transport gamete
Flowers in plants are an attractor of insects and birds which then act as dispersal agents for the male sex cells or gametes called pollen.
Flowers also help the plants to have more options of achieving pollination in that they do not have to depend on the wind for transfer of pollen. Insects and birds are significantly more efficient as agents of pollination than wind.
If decomposers suddenly disappear from an ecosystem, then major cycle like nitrogen and carbon cycle will stop and no recycling of nutrients will occur.
