An organ is a group of tissues working together to perform specific functions. An example of an organ is the heart.
Answer: Chemical bonds
Explanation: an atom has a positively charged nucleus surrounded by a cloud of electrons.
Answer:mitosis produces 2 diploid cells
Explanation:
The organisms that is most likely not functioning as a keystone species in its ecosystem is; the Zebra mussels-Compete with native species, reducing the biodiversity of the Great Lakes ecosystem. Keystone species are plants or animals that play unique and vital role in the way an ecosystem functions. Without keystone species, the ecosystem would be dramatically different or cease to exist altogether.