There are both sexual and asexual modes of pollination. If the male and female parts make physical contace in order for germination to take place, it is a sexual mode of polli â¦ nation. Cross-Pollination   When the pollen of a flower lands â¦ on the stigma of another flower of the same plant, or that of a different plant of the same kind, it is called cross-pollination. 14 people found this useful.
Lots of wars were fought by the United States in the 20th Century:  1. Philippine Insurrection (Philippine-American War 1900-1902). 2.  WW1 (1917-1918) 3. Banana Wars (Centrâ¦al/South America)  1920's/1930's 4. WW2 (1941-1945) 5. Korean War (1950-1953) 6.  Vietnam War (1961-1975) 7.
A: The United States fought Germany, Austria-Hungary and other members of the Central powers in World War I. America's primary enemy was Germany due to several of its actions designed to shift the war to its advantage. The main factors that contributed were the sinking of the Lusitania and the Zimmermann Telegram.