Answer:
blood pressure levels
normal systolic: less than 120 mm Hg diastolic: less than 80 mm Hg
at risk (prehypertension) systolic: 120–139 mm Hg diastolic: 80–89 mm Hg
high blood pressure (hypertension) systolic: 140 mm Hg or higher diastolic: 90 mm Hg or higher
hope it helps <3
Answer:
a. A chemical derived from dead bacteria can produce heritable changes in the traits of living cells.
Explanation:
In 1928 Griffith conducted an experiment with two strains of bacteria <em>Streptococcus pneumoniae</em>, II-R and III-S. III-S was a virulent strain which killed the mice on injecting with it while II-R strain was non virulent and did not harm the mice. When heat killed III-S strain was injected into mice,they again survived because the bacteria were dead.
Griffith then injected heat killed III-S and live II-R strain into the mice. To his surprise, the mice died. He then concluded that living cells of non virulent II-R strain had inherited a chemical from heat killed virulent III-S strain and thus were able to kill the mice. This chemical was called as transforming principle and later was discovered to be DNA. Non virulent strain had been transformed into virulent strain by taking up the DNA from the latter.
Answer/Explanation:
Cheerdancing and street dance both do routines and compete with them. In cheerleading you work on stunts, tumbling, flexibility, and workouts to make you stronger. In dance you work on leaps, flexibility, and combos to learn so you're able to move fluently.
Hi! I would be more than happy to help but I am not understanding the thing you need help on because your spelling I believe.
B, because having high resistance builds your endurance and makes it stronger. Having low resistance isnt effective enough so cross those out, and high resistance with high steps is too much and can lead to damage
