Where does the energy needed to make electricity come from? Select one:

a.
Fuel

b.
Heat

c.
Respiration

d.
Molecular movement

Question 2

If a marshmallow is toasted over a campfire, where did the energy to ‘toast’ the marshmallow originate?
Select one:

a.
Fire

b.
Logs

c.
Air

d.
Marshmallow

Question 3

Where does almost all of Earth’s energy come from?
Select one:

a.
The Sun

b.
Earth’s core

c.
Plants

d.
Caffeine

Question 4
Which process is responsible for turning the Sun’s energy into the energy stored in an apple?
Select one:

a.
Transpiration

b.
Respiration

c.
Decomposition

d.
Photosynthesis

Question 5

Where does Earth’s internal heat come from? Choose all correct answers.
Select one or more:

a.
The Sun

b.
Leftover from Earth’s formation

c.
Radioactivity

d.
Melted rock

Alichen is an organism that structurally appears to be a single organism. but a lichen is actually two different organisms—a fungus and green algae—living together as one organism. the fungal partner derives its nutrition from the photosynthesizing algae. how does a lichen differ in its photosynthetic activity from elysia chlorotica, the sea slug that’s considered to be a photosynthesizing animal? a. in lichens, the fungi photosynthesize on their own, while elysia chlorotica forms a relationship with a photosynthesizing plant. b. in lichens, the relationship with the algae lasts throughout the life cycle, but in elysia chlorotica, the relationship occurs only during the immature juvenile stage of the slug’s life cycle. c. lichens can photosynthesize only because of the living algal partner, while elysia chlorotica incorporates chloroplasts from algae into its cells. d. in lichens, the association between the fungi and algae is permanent, while elysia chlorotica associates with a photosynthesizing organism only when it requires food.

Competition occurs between species when

Which layer will become saturated first when rain falls?