The vaccine was made in the past year, and the flu virus has mutated and grown resistant to this year's flu vaccine
Answer:
natural selection
Explanation:
According to Charles Darwin's theory of evolution by natural selection, organisms that possess heritable traits that enable them to better adapt to their environment compared with other members of their species will be more likely to survive, reproduce, and pass more of their genes on to the next generation.
D because all your veins ate nearly in your heart and if your heart stops they stop too
Answer:
30 percent tree cover - 2000 - 2009JPEG ... of forest cover vary widely—as much as 6 percent of Earth's land area, or the equivalent area of China.
Explanation:
Answer:
study of life
Explanation:
bio means life and logy is study
