Answer:
B:The formation of two or more species from a common ancestor.
Explanation:
The primary goal of water-softening ion exchange systems is to remove magnesium and calcium from waters.
<h3>Water hardness</h3>
Waters that contain carbonates of magnesium or calcium are said to be hard. Soft waters have very little or no magnesium or calcium.
Hard waters are economically and domestically undesirable because they form scales in pipes and do not form lather with soaps, among other effects.
Thus, removing the magnesium or calcium is a way of softening hard waters.
One of the ways of softening hard waters is ion-exchange systems.
More on hard water can be found here: brainly.com/question/2666625
Answer:
The sponge uses this structure for feeding. It is located in whip-like appendages (the flagella)located in the sponge.It generate water currents as the flagella beat the water current , and as food particles passes through with the water current , it(choanocytes) trap these, and ingested it by in folding of its inner membranes .a process called phagocytosis.
Explanation:
The smallest bird is the Bee Hummingbird
