Answer:
A. solar energy in the rays of sunlight
Explanation:
photons in the sunlight rays will excite the electrons in the water molecule and hence will provide the energy for calvin cycle.
The
two categories that are used to classify physical changes are Reversible and
Irreversible.
Reversible
means that the matter can convert to gas, liquid and solid and then convert
back to gas, liquid or solid. So it means it can convert back and forth.
<span>Irreversible
means that matter cannot be converted back as it is before.</span>
1 earth axis 2 sunlight 3 elevation
2) Chemical substances in food dissolve in saliva
Substances form the food need to be dissolved and and a little bit degraded (by teeth and some of the enzymes in the mouth) in order to react chemically with taste receptors
1) Taste receptors are stimulated
Taste receptors are located in the oral cavity, usually on the tongue but also pharynx and the epiglottis (receptors are placed on taste buds within papilla on tongue)
3) Signals are sent to the thalamus by the facial nerve
From the ventral posterior medial nucleus in thalamus sensation is projected to the gustatory cortex
4)The gustatory cortex processes taste perception
The sensation of taste includes: sweetness, sourness, saltiness, bitterness, and umami
Answer:
C. She treats the coral samples identically with varying levels of carbonic acid.
Explanation:
She releases cement particles into a random number of the coral samples.
Doing this is uncontrolled, using a random number for anything in an experiment is a no no.
She uses three different types of coral to establish her dependent variables.
Different types of coral could react differently to the acid, always use only one dependent variable in an experiment.
She obtains her coral samples from coral reefs surrounding different continents.
It is important that the samples of coral be as close to the same as possible so that the coral variables stay constant.
