after the war, khrushchev said that stalin’s leadership cost the soviets “much blood”. why did he likely describe stalin’s leadership in this way?

Explanation:

Saying that the Soviets paid with blood for Stalin’s leadership was Khrushchev’s way to refer to the brutality of Stalin’s control, as well as his disregard for human life. Stalin’s authority was rather brutal and often resulted in many death that served the purpose of strengthening control and proving his point and command. For example, the Katyn massacre occurred on Stalin's orders in 1940. This was the event in which over 20 000 Polish people were executed, including many civilians.

More importantly, Stalin was also famous for his purges. In these repressions and killings, the victims were mainly Soviet people: wealthy peasants, ethnic minorities, and Stalin’s political enemies (some who were previously his collaborators and governmental officials). The exact number of deaths is unknown, but numbers go from 600 000 up to over 1 million people, all before 1938.

All of these events are why it is said that Stalin’s leadership has caused much blood spilling in the Soviet Union as many people, Soviet and foreign, lost their lives because of his authority.

the krebs cycle and electron transport occur in the mitochondria, though other than that i would need to know more information.