Sponges have a pore to squeeze out waste
Studies of populations that reveal correlations between dietary habits and disease incidence are epidemiological studies.
Answer:
Each of your kidneys is made up of about a million filtering units called nephrons. Each nephron includes a filter, called the glomerulus, and a tubule. The nephrons work through a two-step process: the glomerulus filters your blood, and the tubule returns needed substances to your blood and removes wastes.
Explanation:
❤️
Imbalance in an ecosystem due to excessive limiting nutrients (a)