A species that is not native to an ecosystem but is introduced artificially. Usually cause harm to the native species in the area.
An experiment to support the hypothesis, and then a conclusion that either supports or refutes the hypothetical statement
Answer:
The function of the male parts of flowering plants is to produce pollen grains. The pollen grains contain sperm which will fertilize the egg and create a seed to sprout the next generation of plants. The main male part is the stamen. It is divided into two parts: the anther and the filament.
Explanation: that may or may not help, but i hope it does
Answer:
establishes the basic structure for regulating discharges of pollutants into the waters of the United States and regulating quality standards for surface waters.
