Which of the following statements is true of stress?
a- it's a signal life has become to hard to handle.
b- it's completely abnormal and should never occurred.
c- it's beneficial only in large amounts.
d-it's a natural part of our everyday lives.

The heart and lung are located in which cavity ? thoracic

Some viruses can be crystallized and their structures analyzed. one such virus is yellow mottle virus, which infects beans. this virus has a single-stranded rna genome containing about 6300 nucleotides. its capsid is 25-30 nm in diameter and contains 180 identical capsomeres.if the yellow mottle virus begins its infection of a cell by using its genome as mrna, which of the following would you expect to be able to measure? a) replication rateb) transcription ratec) translation rated) formation of new transcription factors

Which of the following is the best description of health protecion the answer is b the direct actions taken by health organizations to improve public health