<span>The motor unit that is activated first and takes less energy is classified as low-threshold. The motor unit that is activated second and takes more energy is classified as high threshold. Sol lifting the labbook and placing it in the book bag simulates more motore units.</span>
Answer: you cannot use a punnet square to find the percentages of The offspring unless you have the genotypes of the parents. For example, is the white trait recessive? This means it will be homozygous lowercase (bb". Are the black feathers dominant, if they are, is it heterozygous or homozygous? (BB or Bb) Read the question because genetics is not rocket science.
Explanation: I am High School Biology teacher and this is one of the best contents of biology, watch a couple videos to figure this out
Answer:
Life expectancy has steadily risen.
People live longer lives.