D: a nucleus
the prokaryote cell has no nucleus and for that matter no other membrane bound organelle
Answer and Explanation:
Throughout the world, the most different species of organisms are insects. As compared to the other species, the number of insect species is greater. The exact number of insect species can be estimated from previous and current studies. Approximately nine hundred thousand species of insects are known. Insectivorous birds are those birds that feed on insects. For numerous growing insectivorous birds, insects are used as a source of protein. One of the most common kinds of insects is beetles. They are found everywhere. Beetles eat fruits, leaves, and other parts of the plant. The reproductive and fertility ability of insects is remarkable. In habitat 2, beetles and insectivorous birds were living. If all insectivorous birds and remaining beetles were removed from habitat, two and five hundred additional light tan beetles and 500 dark brown beetles were released in habitat 2. After one more week, one thousand dark brown beetles would be expected to be recaptured in the habitat 2.
<span>Only about 75% of water is fresh and suitable for human use.
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trans fats can be reduced to less than 1 percent of calories
Reduction in the consumption of trans fats can
reduce blood cholesterol and these will consequently lower the risk of coronary
heart diseases. Thus, food made from animals such as milk and meat products
contain small quantities of Trans fats. However, trans fats can be reduced to
less than 1 percent of calories to avoid build of plagues in the arteries called atherosclerosis.