A scientists follows this procedure to test wether plants have been performing photosynthesis.
1.place plant X in a dark closet and plant Y on a sunny windowsill
2.wait several days, then remove a leaf from each plant
3.boil leaves in alcohol to remove the chlorophyll
4.add chemical indicator that detects sugars(dark purple=sugars are present ;dark orange=sugars are not present

What results will the scientist most likely obtain when placing drops of the indicator on the leaves?
A- plant X dark purple. Plant Y dark purple
B- plant X dark purple. Plant Y dark orange
C- plant X dark orange. Plant Y dark orange
D- plant X dark purple. Plant Y dark orange

the element that provides strength to the exoskeletons of clams and oysters is phosphorus. this is so because calcium carbonate is the main component in the shells.

explanation:

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus

digestion

it excretes wastes

the atmospheric gas that forms a mild acid when dissolved in water is called carbon dioxide. the correct answer is a. 2.) chemical weathering would cause an inscription on a marble headstone to become harder and harder to read over time.