The determinant is a real number, it is not a matrix. The determinant can be a negative number. It is not associated with absolute value at all except that they both use vertical lines. The determinant only exists for square matrices (2Ã2, 3Ã3, ...
Brainly has millions of high quality answers, all of them carefully moderated by our most trusted community members, but certified answers are the finest of the finest. Phytoplankton, also known as single-celled plants, grow in water-bodies and are similar to terrestrial plants in many ways. Since they require sunlight for photosynthesis, these plants usually grow on the surface of water, in the photic zone, where sunlight can penetrate. These plants also require other nutrients such as nitrate, magnesium, zinc, etc to grow.
How do phytoplankton live? Phytoplankton live near the surface of the ocean because they need sunlight like all green plants. They also need water and nutrients to live. Phytoplankton use water and CO2 to grow, but phytoplankton still need other vitamins and minerals, like iron to survive. When the surface of the ocean is cold, the deeper parts of the ocean bring these nutrients to the surface and the plankton live. But, when the surface of the ocean is warm, as in El NiÃ±o, the ocean does not bring as many of these essential nutrients and the phytoplankton die. That causes a major problem because phytoplankton are at the base of the food chain.