April 12 was already a huge day in space history twenty years before the launch of the first shuttle mission. On that day in 1961, Russian cosmonaut Yuri Gagarin<span> became the first human in space, making a 108-minute orbital flight in his Vostok 1 spacecraft.</span>
The correct answer is Independent Samples
Explanation: Independent samples are randomly selected so that changes do not depend on the values of other changes.
Answer: The correct answer is: To prevent the evolution of pathogenic bacteria resistant to all known antibiotics.
Explanation: Natural selection is a process by which a species adapts to the environment. The main purpose of evolutionary medicine is to understand the evolutionary origin of diseases to improve the treatment and care of patients.
Answer:
The hydrosphere is the combined mass of water found on, under, and above the surface of a planet, minor planet, or natural satellite. Although Earth's hydrosphere has been around for about 4 billion years, it continues to change in shape.
