Answer:
Chitin
Explanation:
Chitin is a natural biopolymer that is made of the N-acetylglucosamine, modified glucose.
Chitin is an important polymer mainly for the fungi and the arthropod insects as it is present in the cell wall of the fungi and the exoskeleton of the insects.
The chitin provides a protective function to this organism that the digestive enzymes cannot degrade this chitin but only the symbiotic bacteria can digest eat therefore they are sometimes avoided to be eaten.
Thus, chitin is the correct answer.
Natural selection
Weather
Genes
Given that there are 250 seats in the cinema and they are 170 people sitting on the seats provided, in order to get the percentage we will first arrange the given details.
250 seats
170 seats filled
X = percentage
Take 170 / 250
So it will be 170 ● 100 = 17,000
Next, 17,000 250 = 68
So we will have 170 is the 68% of 250. Therefore, 68% of the seats in cinema are filled.
Answer: A biotic factor that impacts food chains and trophic levels
Explanation: Algae is at the bottom of the food chain, but provides all the energy for each organism in the ecosystem through photosynthesis
a major reason that human have negatively affected the environment in the past is that they