C. A decrease in the available water.
Without enough water the plant populations will eventually drop.
Answer:
Mitosis is the process in which the nucleus of a eukaryotic cell divides. During this process, sister chromatids separate from each other and move to opposite poles of the cell. This happens in four phases, called prophase, metaphase, anaphase, and telophase
Answer:
Option D, at the branch tips
Explanation:
Phylogeny tree is just like a family tree in which the roots of the tree that are its base represents the ancestral lineage. While moving towards the branches , the time is considered to be moving forwards as the organism which lie at the tip of the branches are the ones which have evolved from the ancestral lineage lying at the base. Thus, the branches at the end of a tree are the ones which have the most recently evolved organism.
Thus, option D is correct
Answer: Hydrosphere
Explanation: The hydrosphere is all the water such as lakes and rivers.
It also includes all the gas clouds because water can be solid, liquid, or gas
so oceans, ice caps, and water vapor is included.
Day and night is caused by the Earth's axis' rotation. The Earth is tilted about 23.5<span>º and every 12 hours or so, it changes every night.
Correct me if I read it wrong.</span>
