Metamorphic rocks can be formed by D) <span>all three types of rocks, igneous, sedimentary, and metamorphic</span>
The answer is spleen
Spleen is organ that has a role in red blood cells and the immune system. The spleen is connected to the lymph vessel. Spleen produce antibodies and destroy pathogen or any cells that binds with the antibodies. Adaptive antibody would be produced by plasma cell which come from B-cell.
A benign tumor is not a malignant tumor, which is cancer. It does not invade nearby tissue or spread to other parts of the body the way cancer can. In most cases, the outlook with benign tumors is very good. But benign tumors can be serious if they press on vital structures such as blood vessels or nerves. A malignant primary tumor is more dangerous because it can grow quickly. It may grow into or spread to other parts of the brain or to the spinal cord. Malignant tumors are also sometimes called brain cancer.
Answer:
Only plants with perfect flowers are capable of self-fertilization.
Explanation:
Self-pollination is the process that allows plants to fertilize themselves. This process is very beneficial when a plantation has plants with few flowers or when the plants are spaced far apart.
However, only plants with perfect flowers can self-fertilize. This is because for self-fertilization to occur, the plant needs to have flowers that present the male and female reproductive organs, which allows the same flower to produce pollen that will be sent to its own ovary. Only perfect flowers have male and female reproductive organs at the same time.
Answer: D, Assigning a monetary value to some ecosystem services can be
difficult.
Explanation: ap3x