answer:To find the answer to this question, I will perform the following steps: 1. Research the World Rowing Championships and the different boat class events that took place after 2007. 2. Identify which boat class was not run as a World Rowing Championship event after 2007. Step 1: Researching the World Rowing Championships and relevant boat classes - I will search for information on the World Rowing Championships and the boat classes included in the events after 2007. Step 2: Identifying the boat class not run as a World Rowing Championship event - Upon researching, I found that after the 2007 World Rowing Championships, the Lightweight Men's Coxless Four (LM4-) was no longer run as a World Rowing Championship event starting from 2017. This decision was taken as part of the program adjustments recommended by the International Olympic Committee to ensure gender equality in the sport and allow lightweight women's events to be added to the roster. In conclusion, the boat class that was not run as a World Rowing Championship event after 2007 is the Lightweight Men's Coxless Four (LM4-), which was removed from the program starting in 2017.

answer:The only 20th century president to be carved onto Mount Rushmore is Theodore Roosevelt. Mount Rushmore National Memorial is a colossal sculpture carved into the granite face of Mount Rushmore in the Black Hills region of South Dakota. The monument features the heads of four significant United States presidents—George Washington, Thomas Jefferson, Theodore Roosevelt, and Abraham Lincoln—each chosen because they respective roles in the country's establishment, development, and preservation. The sculptor behind this mammoth project was Gutzon Borglum. The work began in 1927, and it took 14 years to complete, with occasional interruptions caused by weather and financial issues. Completed in 1941, Borglum died a few months before the work was declared finished. Theodore Roosevelt, the only 20th-century president on Mount Rushmore, had a considerable impact on the United States, serving as the 26th president from 1901 to 1909. He was chosen by Borglum due to his significant contributions to the development of the country. Some notable achievements during his presidency include promoting progressive policies that championed labor rights, consumer protection, and natural resource conservation. He was instrumental in the construction of the Panama Canal and was an advocate of the U.S.'s emergence as a major world power. Roosevelt's passion for conservation led to the establishment of five national parks and 18 national monuments, along with 150 national forests, setting aside over 230 million acres of public land for the generations to come. This strong commitment to conservation is one reason why he was ideal for inclusion alongside the other three remarkable American presidents on the iconic Mount Rushmore monument.

answer:The missing first step of the following process is: - Iron is exposed to a combination of water (moisture) and air (oxygen) When iron comes into contact with water and air, it creates a suitable environment for the rusting process to begin. The presence of moisture in the air accelerates the oxidation process, leading to the subsequent steps you mentioned.

answer:Annelids release sperm from their nephridia, which are excretory organs that help in the expulsion of both sperm and ova into the water for external fertilization.