Step 3 Carrying capacity is the maximum amount of a type of species that an environment can hold. Food, water, shelter, and space are all resources that a population needs to survive.
In an ocean ecosystem, a population can change over time in many different ways. For example, if an underwater volcano occurs and wipes out all the plankton, the species of fish will die out because there is no food available for them to feed on.
Step 4 A limiting factor is a low shortage of something in an environment that prevents the growth of a species. An example of a limiting factor in an ocean ecosystem is sunlight. If kelp does not get enough sunlight, it cannot get the nutrients it needs to grow. Now plankton cannot feed on kelp because there is none.
Step 5 1.) Producers: One of the main producers in an ocean ecosystem are phytoplankton. These one-celled organisms use the Sun to create energy. Another example of a producer is kelp. 2.) Consumers (1st Level): Tiny shrimplike creatures in the ocean feed on phytoplankton and kelp, making them omnivores. 3.) Consumers (2nd Level): Small fish rely on the shrimplike creatures for food. 4.) Consumers (3rd Level): Bigger fish such as tuna feed on the smaller fish. 5.) Consumers (4th Level): Sharks feed on larger fish such as tuna and bass.
Organisms in an ecosystem recieve their energy from the level below them. Producers are vital to an ecosystem because they are the primary source of energy in food chains.
Step 6 Food webs are more realistic than food chains because they show all food chains interlocked to show even more predators & prey.
If the lantern fish were to be taken out of the food web, squids would not be able to survive because the lantern fish is their only source of food. Furthermore, the small sharks, marlin, tuna, and lancet fish would begin to decrease in small numbers because they feed on squids.
Step 7 Using a pyramid to label amounts of energy is logical because as the levels go up, the amount of energy passed on goes down. Producers are at the largest level (base) because they produce and pass on the most energy. Top consumers are at the top because they recieve the least amount of energy from the levels below them.
Step 8 Formula for photosynthesis: CO2 + H2O = C6H12O6 + O2
Sunlight, carbon dioxide, and water are needed for photosynthesis; glucose (sugar) and oxygen are produced. Photosynthesis occurs in the stomata of a plant. The stomata act like the mouth/nose of a plant. Radiant energy converts to chemical energy during photosynthesis.
Step 9 Tropism is the turning or bending movement of an organism toward or away from an external stimulus. There are two types of tropisms; positive, which is movement toward the stimulus, and negative, which is movement away from the stimulus. There are also four other main types of tropisms; phototropism (movement in response to light), geotropism (movement towards or away from the earth), thigmotropism (movement towards/away from touch), and hydrotropism (movement/bending in response to water).
In an ocean ecosystem, phototropism takes place in most plants. Since sunlight is scarce most of the time in the lower levels of the ocean, plants will grow towards any light available to them.
Step 10 Decomposers are vital to the ocean ecosystem because just as phytoplankton (the foundation of the food web) are important to provide energy for higher level consumers, equally important is the role of decomposers to provide energy to help phytoplankton grow and live. Bacteria, fungi, and shrimp are three examples of decomposers in the ocean.
Step 11 (Extra Credit) Adaptations are traits that are adapted by organisms to survive in a particular area/ecosystem; they are important because they are the base of survival. For example, polar bears have a thick coat of fur to lock in body heat and keep out external cold. Without their fur, polar bears would most likely freeze to death in the arctic. There are two types of adaptations: structural and behavioral. Structural (base word: structure) is a physical adaptation. For example, the polar bears' fur that I mentioned is a structural adaptation because it is shown on their body. Behavioral (obviously, base word: behavior) is pretty self-explanatory. An example of a behavioral adaptation is a cat's instinct for good hearing.