Answer:
Algae as well as other plants naturally grow in water,but excess of these plants can be detrimental to organisms that live in water. In our homes and farms we use fertilizers to give our plants nutrients. Fertilizers contain nitrogen, phosphorus, and potassium. When it rains these fertilizers are washed off into the lakes,dams and rivers. These fertilizers accelerate the growth of algae, it grows uncontrollably across covering the lake. When the lake, dam or stream is covered with algae it blocks sunlight from entering the lake, thus plants under water cannot photosynthesize, thus oxygen is not created.
Explanation:
Answer:
Build your rabbit a predator-proof hutch made from solid wood with strong wire mesh and sturdy bolts. Outdoor runs should be covered to prevent hawk attacks with a floor to stop foxes digging underneath. Use motion-activated lights and sprinklers to scare predators away.
Answer:
Independent variable: varying amounts of light
Dependent variable: plant growth
Explanation:
The variable, which are factors that can be altered, in an experiment can either be independent or dependent. An independent variable is one in which the experimenter manipulates or controls in order to bring about an outcome. For this experiment conducted by Rachel, the independent variable is the VARYING AMOUNT OF LIGHTS.
The dependent variable is the variable that responds to changes of the independent variable. In other words, the dependent variable is the outcome of manipulating the independent variable. Hence, the dependent variable is dependent on the independent variable. For Rachel's experiment, the PLANT GROWTH is the dependent variable because it is what responds to changes in amount of light (independent variable).
