Answer:
absorption of oxygen
Explanation:
the others would not make sense so i think this is the answer
Sodium and potassium have opposite effects on heart health: High salt intake increases blood pressure, which can lead to heart disease, while high potassium intake can help relax blood vessels and excrete the sodium and decrease blood pressure.
Answer: convergent evolution
Explanation:
The similar shapes of fast swimming marine predators are an example of convergent evolution.
Convergent evolution shows how different species possess identical structures even though they evolve separately. Convergent evolution typically takes place with the organisms that are not really related.
An example of convergent evolution is the similarity that can be noticed in the wings or the flights of bats, birds, insects, etc
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.
