Answer:digestive system
Explanation:
It's after mastication that enzymes act on the food to convert it into an assimilable manner
Answer:
C. A plant absorbing carbon dioxide during photosynthesis
Explanation:
Carbon assimilation occurs when inorganic carbon (carbon dioxide) is converted to organic compounds by living organisms such as plants.
Let's analyze each choice;
The respiration of a animal - Respiration
A factory burning fossil fuels- Combustion
A plant absorbing carbon dioxide during photosynthesis- assimilation or fixation
Fossil fuel deposits - from decay of dead organisms and waste products.
Answer: D
Explanation: The villi increases the surface area for food absortion. Each villus has a network of thin and small blood vessels close to its surface. The surface of the villi absorbs the digested food materials.
Carbohydrates are made from the process of photosynthesis by green plants by use on energy from sunlight. They have various functions in the ecosystem by plants an animals. The two main function of carbohydrates are; carbohydrates as a source of energy for cellular activities. They are reserves and stored in form of starch in plants and inform of glycogen in animals. They also act as structural components in both plants and animals such as cellulose which is a components of plant cells.
Answer:
b
Explanation:
It is a fossil of sea shells
