Answer:
Reciprocal altruism is one of the altruism behaviors in which an individual organism helps in increasing the fitness of another organism by reducing the fitness of itself temporarily in expectation of the same behavior from another organism in the future later.
It takes place in the same set of organism partners which is a continuous interaction ion in stable groups of organisms.
Thus, the correct answer would be - an ongoing interaction in the same set of partners.
All the above the correct answer if I’m not mistaken
Answer:
the organs of the digestive system are:
Mouth: The mouth is the region where the first processes of digestion begins. Saliva in the mouth mixes with the food as we chew it.
Pharynx and the esophagus:
Food travels from the mouth to the pharynx and esophagus. In the pharynx, swallowing takes places partially as well as non- partially.
Stomach: The stomach is the organ where most of the digestion takes place. The stomach secretes various enzymes for the digestion of food.
Small intestine: The small intestine comprises of duodenum, jejunum, and ileum. Enzymes released by the pancreas and bile from the liver help in digestion here. Re-absorption of the nutrients takes place here.
Large intestine: The large intestine comprises of colon, rectum and anus. The excretion of waste takes place here.