Answer: A). Flatworms
The illustration shows planaria which is a free living organism. It has flat shape and simple structure. This animal belongs to group of Flatworms. The flatworms do not have well developed respiratory and circulatory systems, these are simple organisms which derive the oxygen and nutrients by diffusion.
Answer:
The gonads (the testes in males and ovaries in females) are responsible for the production of steroid hormones, such as testosterone, estrogen, and progesterone.
Explanation:
B. It goes in an equation: Reactants <-> Products
Type 1 diabetes occurs when your immune system, the body's system for fighting infection, attacks and destroys the insulin-producing beta cells of the pancreas. Scientists think type 1 diabetes is caused by genes and environmental factors, such as viruses, that might trigger the disease.
Spirillum, genus of spiral-shaped bacteria of the family Spirillaceae, aquatic except for one species that causes a type of rat-bite fever in man. The termspirillum<span> is used generally for any of the corkscrew-like species. sounds scary really isnt but it so cooool</span>
