Which statement about biodiversity in coral reefs is accurate?(1 point)
Responses
A. Most organisms that live in coral reef habitats are zooxanthellae.
B. Coral reefs have much biodiversity, but most species that live there migrated from other habitats.
C. Species that evolved in coral reef habitats always stay in those habitats.
D. More new species have evolved in coral reef habitats than in most other types of habitats.
D. More new species have evolved in coral reef habitats than in most other types of habitats.
The weathering of four different rock samples with different masses was studied. Each rock sample was placed in a separate beaker containing 500 milliliters of a dilute acid for 10 minutes. Bubbling was observed in some of the beakers. The data table below shows the mass of each sample, in grams, before placement in the acid and after removal from the acid.
The weathering of four different rock samples with different masses was studied. Each rock sample was placed in a separate beaker containing 500 milliliters of a dilute acid for 10 minutes. Bubbling was observed in some of the beakers. The data table below shows the mass of each sample, in grams, before placement in the acid and after removal from the acid.
Which Earth process is being modeled in this experiment?
A. chemical weathering
B. physical weathering
C. photosynthesis
D. erosion
A. chemical weathering
Base your answers on the diagram and data table below. The diagram shows the equipment used to determine the factors affecting the rate of erosion in a stream. The data table shows the time it took a 10-gram sample of quartz sand to move 100 centimeters down the rain gutter under various conditions.
rain gutter slope water velocity erosion time (s)
fine sand course sand
5 degrees slow 20 60
fast 15 40
10 degrees slow 15 40
fast 10 30
20 degrees slow 10 30
fast 5 15
What is the relationship between the water velocity and the rate of erosion?
A. If the water velocity increases, the rate of erosion increases.
B. If the water velocity decreases, the rate of erosion increases
C. If the water velocity remains constant, the rate of erosion decreases.
D. If the water velocity remains constant, the rate of erosion increases.
A. If the water velocity increases, the rate of erosion increases.
In this experiment, the water velocity could be increased by(1 point)
Responses
A. widening the rain gutter
B. increasing the amount of water from the faucet
C. lowering the flexible hose
D. decreasing the slope of the rain gutter
B. increasing the amount of water from the faucet
Base your answer to the following question on the diagram below, which represents a profile (cross section) of a stream. Points A through E are locations along the stream.
Base your answer to the following question on the diagram below, which represents a profile (cross section) of a stream. Points A through E are locations along the stream.
The primary force responsible for the flow of water in this stream is
(1 point)
Responses
A. solar energy
B. gravity
C. magnetic fields
D. wind