Thomas and Julie wanted to find out which material would insulate theirteacher's coffee cup and keep the coffee hot for the longest period of
time. They first wrapped her cup with bubble wrap and recorded the
temperature of the coffee once every 15 minutes for 2 hours. They
repeated the investigation, this time using newspaper instead of bubble
wrap, but they got the same results for both materials. Which of the below
is their control or constant variable?
the type of insulation
the temperature of the coffee
the type of coffee cup
The students conducting the experiment

Maria wondered if different colors of plastic wrap affected the time for bread to mold. She wrapped aslice of bread in clear plastic wrap. Before wrapping the bread she placed 5ml of water in the center of

the bread. She repeated the process with a slice of bread using red plastic wrap & a slice of bread using

blue plastic wrap. The bread came from the center of the same loaf. In each case she used the same

amount of water and the same brand of plastic wrap. She wrapped the different slices of bread in the

same way.

Independent variable:

I

Dependent variable:

Control:

The name for continents in one landmass surrounded by gigantic ocean

When wind drips its load of sand, it can form a hill called a

Green plants take in oxygen and water, use them to produce food, and give off carbon dioxide.

Plants use carbohydrates to build things such as cellulose. How do plants acquire these building blocks to build mass?a. They absorb carbohydrates through the soil.
b. They absorb dissolved carbohydrates via water.
c. They make carbohydrates through the process of photosynthesis.
d. They make carbohydrates through the process of cellular respiration.

The English moth, Biston betularia, is often cited as an example of observed evolution. There are two colors of this moth, light anddark (typica and carbonaria). Kettlewell found that dark moths constituted less than 2% of the population prior to 1848. Then, the
frequency of the dark coloration began to increase. By 1898, the 95% of the moths in Manchester and other highly industrialized
areas were of the dark color. Using the moth example, analyze the events in order to identify support for the statement: natural
selection changes populations, not individuals. Choose ALL that apply.
A)
Variation in the population existed.
B)
Color variation is a result of different gene combinations.
In response to environmental change, moth coloration changed from light
to dark.
D)
Due to natural selection, the ratio of different genetic combinations is
changing
E)
Predator pressure resulted in the light colored genotype being removed
from the gene pool.
Evolution