Answer:
Plant cells have cell walls
Explanation:
While both plants and animals are eukaryotic and multicellular, only plant cells have a cell wall.
A chemical compound is an entity consisting of two or more atoms, at least two from different elements, which associate via chemical bonds.
Answer:All living organisms are composed of cells, from just one to many trillions, whose details usually are visible only through a microscope.
Explanation:
Answer:
The lymphatic system, or lymphoid system, is an organ system in vertebrates that is part of the immune system, and complementary to the circulatory system. It comprises of a large network of lymphatic vessels, lymph nodes, lymphatic or lymphoid organs, and lymphoid tissues.
A. Mass extinction is the answer