Which of the following statements is true of early space exploration? A. The first manned space exploration took place in 1957, when the United States launched Sputnik I.
B. The first manned space exploration took place in 1958, when the Soviet Union launched Explorer I.
C. The first manned exploration of space took place in 1961, when NASA's Mercury Project launched the first astronaut into suborbital space.
D. The first manned exploration of space took place in 1961, when the Soviet Union launched Vostok 1.

c

Explanation:

Dont be mad if im wrong

they fuse to form they have half as many chromosomes as a somatic cell of the same individual. b

correct answer: understand the different control methods available

integrated pest management is an strategy that is based on the ecosystem and try to prevent the pest and the damage caused by them by applying combination of technique like habitat manipulation, biological control and use of resistant varieties.

the main aim of the integrated pest management is not to completely eliminate the pest but to strengthen the ecosystem so that conditions are favorable for plants and unfavorable for pests.