The light intensity decreases with increasing depth of the ocean water. This leads to the division of the ocean into three major zones, sunlight zone, twilight zone, and deep sea zone. The autotrophs like the phytoplankton live in the sunlight zone and perform photosynthesis using sunlight. Various fishes that eat planktons also live in the sunlight zone. The twilight zone is inhabited by various predators like the octopus, sharks and dolphins. Here the pressure of water also is greater. In the deep sea zone, no light is present. Fishes like the angler fish and other bio-luminescent organisms live here. This zone also contains chemotrophs as the producer of food. The pressure of water at this zone is the greatest which is not bearable by the organisms living above it. Thus in this manner light and depth determine the distribution of various organisms in the ocean.
The correct answer is that, all of the names above are examples of animals.
The Quagga is described as a mammal like zebra, while the mussels and cichlid are examples of a freshwater fish, lastly mollusks are examples of species such as snails and <span>Mytilus edulis or commonly referred to as the common mussel.</span>
Answer:
Female salmons create the hole where eggs are laid and fertilized by male sperm cells.
Explanation:
Salmon are fishes which live in salt water oceans and fresh water streams. They return to their home stream and lay their eggs at the bottom of the stream by digging it. This is usually done by The female salmon turning on her side and beating the river bed with powerful sweeps of her tail. She does this until the hole is a foot and a half deep. She then lays the egg there which is then fertilized with speed by the male.
She then dies in the same place in which she was born about 5 years earlier.
Answer:
The density of the aluminum is 5.45 g/cm3
Explanation:
Density (δ) is the ratio of the mass to the volume of a substance:
δ= m/v= 109 g/ 20 cm3= <em>5, 45 g/cm3</em>