Answer:
a. parasitism:
The parasite benefits by harming the host e.g hookworms and humans
b. commensalism
In this association, one species benefits while the other is unaffected (its not harm and dies not benefit) e.g. epiphytic orchids and trees
c. mutualism
Here, both species benefit as seen in rumen bacteria and cows
Explanation:
Parasitism = +/- relationship
The predator benefits by harming the host. E.g. hookworms and humans. The hookworm (parasite) eat man blood while man (host) loses blood to it.
Commensalism = +/0 relationship
One specie(s) benefits while the other specie(s) neither benefits nor is harmed. E.g. epiphytic orchids live on tree branches or tree trunks as it's habitat or shelter while the trees neither benefits nor is harmed
Mutualism = +/+ relationship
Both organisms benefit in this relationship. E.g. rumen microbes aids grass digestion in cows, while the microbes benefit as it obtain steady food or nutrient from the cow
Answer:
polypeptides
Explanation:
Bromelain in pineapple is a type of enzyme known as a protease, which breaks other proteins apart by cutting the chains of amino acids. Even more specifically, bromelain is a cysteine protease, meaning that it breaks apart proteins wherever they have a cysteine amino acid.
The options are missing in the question statement. However, I managed to find from another source. These are
A.they ruled much of West Africa
B.they built large cities in the West African rain forest
C. they controlled the gold for salt exchange
D. they grew powerful through trade
Answer:
B. They built large cities in the West African rain forest.
Explanation:
"They built large cities in the West African rain forest" doesn't describe all three kingdoms of Ghana, Mali, and Songhai. Ghana, Mali, and Songhai were three of the greatest western African trading states. They controlled the trade of gold, salt, and merchandise between North Africa and sub-Saharan Africa in the 16th century. Their strong trade grew them powerful.
