This is just a suggestion but consider comparing/contrasting a dog, cat, horse, mouse, snake, amoeba, fish and a human for what should provide more than twenty specific adaptations. Then consider why each animal is built that way.
In reality there are multiple adaptations associated with a single characteristic.
Some General Categories (some more specific than others as I am winging it)
teeth (grinding, shearing, hollow....none)
scales (no scales...)
bones (cartilage, no cartilage, entirely cartilage...
hair (hollow, undercoat, long, short...)
legs (no legs, long, short, jointed, 1 toe, 2 toes...)
camouflage (spots, stripes, agouti, dilute...)
gills/lungs
ability to stand upright
hands (opposable thumbs...)
vocal cords
whiskers
beaks
eyes
tails (no tails)
claws (retractable, non retractable, short long, sharp dull)
unicelluar/multicelluar
locomotion (cilia, flagella, water jet, current,
fat as insulation (blubber, fat...oil)
hibernation, estivation, brumation
multiple organ systems
Oh...and a brain...
20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 + 20 = 400.
20 of 20 = 20 x 20 = 400 20% of 20 = 0.2 x 20 = 4
The LCM of 20 and 20 is 20.
"20 more than 20" means that you are adding 20 by 20. Then: 20 + 20 = 40 So 40 is 20 more than 20 because 40 - 20 = 20!
20 + + 20 + 20 = 60
A 20 x 20 room will have a perimeter of 20 + 20 + 20 + 20 = 80.
20% of 20 = = 20*20/100 = 4
if you want the whole number, multiply 20 by 7. 20+20+20+20+20+20+20=140
About 20 kilometres.About 20 kilometres.About 20 kilometres.About 20 kilometres.About 20 kilometres.About 20 kilometres.About 20 kilometres.About 20 kilometres.About 20 kilometres.About 20 kilometres.About 20 kilometres.
20 x 7 = 20 + 20 + 20 + 20 + 20 + 20 + 20 = 140 The answer is 140.
100% of 20 is 20.
20+20 = 40