The best answer to fill in the blank is "multilayered membrane."
Producers, because they're the start of the food chain and without them there will be no food chain.
7 possibilities total 3 steps.
Answer: USDA registration for research institute.
Explanation:
United States Department of Agriculture ( USDA) is a federal agency in the United States which was founded by Abraham Lincoln. This agency plays a major role in the regulation and maintenance of farming, ranching, and forestry industries, as well as regulating aspects of food quality & safety. The agencies established under the USDA includes:
--> Agricultural research services
--> Farm service agency and
--> Animal and Plant health inspection service.
Through the Animal and Plant inspection services, the USDA administers the Animal Welfare Act (AWA) which purposefully excluded laboratory strains of rats and mice because they are breed specifically for research purposes.
Explanation:
The answer is B.
That's : Red blood cells are flat and indented so they can carry the greatest possible amount of oxygen.
The answer you chose is incorrect, because it is the white blood cells which destroys infection.
