<h3>Food chain</h3>
A food chain is a chain of different animal species that are dependent on the next as a source of food. If one source dies, then the chain starts to break.
<h3>Food webs</h3>
Food webs are a system off overlapping food chains. Basically meaning, many food chains combined together.
<h3>Pyramid Model</h3>
A pyramid model includes the following:
- Primary Producers
- Primary Consumers
- Secondary Consumers
- Tertiary Consumers
Hope this helps! :)
<h2>-CloutAnswers </h2>
Answer:
Villi are finger-like projections.They increase the surface area of inner walls and helps alot in absorption of digested food.
Explanation:
C . mRNA because i know it’s right
Answer:
Hepatic portal vein
Explanation:
Hepatic portal vein is a blood vessel that transports blood from the gastrointestinal tract (digestive tract) and spleen to the liver. This blood vessel delivers deoxygenated blood to the liver from the small intestine. This blood transported from the digestive tract to the livers contains toxins and nutrients which have been extracted from food that have been digested.
The hepatic portal vein is about 8 cm in length in average adult and located close to the abdomen at the right upper quadrant.
