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.
In the euphotic zone, phytoplankton use sunlight to produce food and become the basis of most oceanic food webs. Although photosynthesis cannot occur much below 100 meters, there is enough light in the lower photic zone for marine animals to avoid predators, find food, recognize their species, and locate mates.he aphotic part of this zone has giant squid and other species that are adapted to life in deep water. Benthos organisms such as giant kelp, sponges, crabs, sea anemones, sea stars, and marine worms that attach to, crawl upon, or burrow into the seafloor occupy parts of the benthic zone.