You have to first make some observations and then ask a question. Then you make a hypothesis (or guess) what the answer is - do the experiment to see if you're right!
It is important that it has half because there is a half that comes from each parent. so to equal it all out human gametes have a half set of dna instead of a full set
Here's a few I got off google
#1: Algae Is Efficient to Create BioFuel.
#2: Algae Can Use Land That Would Otherwise Go to Waste.
#3: Algae Can Be Used for Animal Feed.
#4: Algae Can Function As An Energy Source.
#5: Algae Can Be Used To Create Vegetable Oil.
#6: Algae is a Great Human Food Supplement.
Use which ever ones you want
D bc active transport is basically the opposite of osmosis and diffusion
