Littering, hunting specific endangered species, honestly there are tons of things so the easiest one would be littering because if animals eat certain things it can kill them.
Answer:
the tissue in plants that conducts water and nutrients upwards from the root
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
The lungs belong to the respiratory.
