Answer:
Biodiversity is usually defined as the diversification of living species that exist on earth and the complexities that occurs in the ecosystem. It includes all the plants, animals, humans and micro-organisms.
The biodiversity is often affected by factors such as climate change, loss of habitat area, and occurrence of invasive species.
Three of the biological services that are provided by biodiversity are as follows-
- A large number of medicines are being made from the various plant species that exist in an ecosystem.
- It provides food, on which the organisms are dependent on it.
- It also provides materials that are used for construction purpose and used as shelter.
Up to 460
Being active is important in targeting weight loss. Activity can help your body to burn more energy in the form of calorie. To lose weight people need to reduce the number of calories they consume and increase the physical activity they do. Both are important especially diet. Aerobic activty and strength training are some of the physical activity that can help in reducing weight. This includes biking, walking, running
Answer:
The main function of stomach is to serve as a temporary storage chamber and primarily breaks down food by mechanical means.
Explanation:
The stomach is a muscular organ located on the left side of the upper abdomen.It secretes acid and enzymes that digest food.The stomach muscles contract periodically, churning food to enhance digestion (breaking down of food by mechanical means). The stomach is made up of several layers of tissues
The mucosa (mucous membrane) is the inner lining of the stomach.
Next is the sub mucosa.
The muscularis propria (or muscularis externa) is the next layer that covers the submucosa. It is the main muscle of the stomach and is made up of 3 layers of muscle.
The serosa is the fibrous membrane that covers the outside of the stomach.
The stomach has 3 main functions:
1.temporary storage for food, which passes from the esophagus to the stomach where it is held for 2 hours or longer
2.mixing and breakdown of food by contraction and relaxation of the muscle layers in the stomach
3.digestion of food
The stomach secretes various secretions containing enzymes which breaks down food chemically and the muscles mechanically break down the food.Food is broken down into a thick, acidic, soupy mixture called chyme, which enters the intestine.
