There are plenty of plants producing oxygen by photosynthesis.
Also, human's only use 5% of the oxygen in the air in respiration, there is 21% in the air.
The following events are provided;
A.The height of the civil rights struggle in the United States
B.The Civil War
C.The Great Depression
D.The first appearances by the Fisk Jubilee Singers
The answer is; B, A, D, C
- America civil war occurred in 1861
- The height of the civil rights struggle in the United States was in the 1870s
- The Great Depression occurred in 1929
- The first appearances by the Fisk Jubilee Singers were in 1871
Phoebus Levene was the one who proposed <span>the polynucleotide model stating that dna and rna were composed</span>
Every young corn plant will have the male straw-tassels at the top, the male part, and the silk tassels lower of the plant on the developing corn, the female part. The developing corn has ovules in its ears. The pollen from the straw-tassels will pollinate the silk tassels. The silk are the stigma and style of the female flower. When the pollen travels down the style and fertilizes the ovules, a corn(the seed) develops on the cob.
Each silk represents a corn seed. If particular silks are not pollinated, that corn will not be full of corn
