The first. One will be Guard cell
Some spicules are formed of the mineralized substances calcium carbonate and silica, while others are made of an organic substance called spongin. Sponginskeletons<span> were and are used as scrubbers in bathtubs, though they are fairly expensive. The ubiquitous bathtub accessory called a lufa is NOT a </span>sponge<span>, but a plant.</span>
1. certain foods may raise your cholesterol level causing plaque to build up in your arteries which may end in a heart attack.
2. Poor food choice might raise your blood pressure due to too many sugars or fats that might cause diabetes.
Answer:
for a hypothesis to be part of an accepted theory, it must have been extensively tested through experiments under different conditions
