Answer:
only helium makes balloons go up so the answer is helium
Explanation:
The solution to the above question using the formula f=1/T where. T=0.5seconds is f=1/0.5= 2 hertz
Phospholipid: a lipid containing a phosphate group in its molecule, e.g., lecithin.
If your choices are the following:
<span>A. rhizoids
B. sporophylls
C.leaves
D.the waxy cuticle
E. lignified vascular tissue
Then the answer is E.</span>
