i need help in my siense test!!!!!!!!PLEASE HELP ASAP

_________________________________________________________________
1. A grassland community is pictured below.

ScienceBench00010

Grasses are considered –
(1 point)
secondary consumers
producers
primary consumers
decomposers
2. A food web is pictured below.

ScienceBench00011

In the food web above, which of the following organisms feeds on the largest variety of different producers?

(1 point)
ScienceBench00012
ScienceBench00013
ScienceBench00014
ScienceBench00015
3. An increase in which of the following factors will most likely result in an increase in the size of a population?
(1 point)
Food
Predators
Competitors
Temperature
4. The graph shows predator/prey populations over a number of years.

ScienceBench00016

A reasonable hypothesis based on these data is that if the prey population decreases, then –
(1 point)
bacterial diseases will increase
the predator population will decrease
the prey population will become extinct
decomposer populations will increase
5. In general, insects benefit flowering plants most by –
(1 point)
removing nectar
loosening soil
opening flower petals
carrying pollen
6. Which of the following traits is most influenced by the environment?

(1 point)
Eye color
Body weight
Blood type
Color blindness
Use the information below and your knowledge of science to answer questions 7–9.

ScienceBench00017

7. A bristlecone pine in the White Mountains usually adds a new ring when which of the following occurs?

(1 point)
Earth’s daily rotation is complete.
The full moon causes a monthly high tide.
Earth’s Northern Hemisphere is tilted toward the sun.
The new moon is visible from Earth’s surface.
8. How could tree rings from bristlecone pines support the theory that some areas have had periods of drought and flooding for hundreds of years?

(1 point)
By providing evidence of relative precipitation levels
By providing direct evidence of the most recent flood
By showing how humans have affected Earth’s climate patterns
By showing how precipitation levels and temperature changes are related
9. The dolomite soil keeps the roots of the bristlecone pines cool by –

(1 point)
reflecting the heat energy from the soil around the roots
absorbing chemical energy from the roots
transforming heat energy into chemical energy
transferring thermal energy from the soil to the roots
10. Which of the following is a biotic factor?

(1 point)
sunlight
worms
water
climate
11. The picture below shows four varieties of the same species of grass that grow in a prairie ecosystem.

ScienceBench00018

Which variety has the best chance of surviving a long period of dry weather?
(1 point)
Variety 1
Variety 2
Variety 3
Variety 4
12. The first organisms to grow in new or disturbed areas are called –
(1 point)
omnivores
consumers
predators
pioneer species
13. The table below shows where some birds in a Texas ecosystem are located within the layers of plants in their environment.

ScienceBench00019

These layers begin at the ground and end in the area above the treetops. Which of these would most likely occur if a wildfire destroyed all the plants in the lowest level of this ecosystem?

(1 point)
Doves would have to move to a different area to find food.
Vireos would begin to nest on the ground.
Hawks would begin to hunt for animals in the middle level.
Cardinals would move to above tree level and begin competing with hawks.
14. Look at the picture below.

ScienceBench00020

If this area were to experience a long drought, which plant population would be the first to DECREASE in number?
(1 point)
Bushes
Water lilies
Trees
Cattails
Use the short passage below and your knowledge of science to answer question 15.
ScienceBench00021

15. The high winds of hurricanes and typhoons often destroy mangrove forests. The destruction of these forests most likely affects ecosystems by –

(1 point)
reducing beach erosion in sea-turtle nesting areas
reducing the amount of saltwater flowing into lakes
causing pollution in inland rivers and streams
forcing migratory birds to find other places to rest

Question

i need help in my siense test!!!!!!!!PLEASE HELP ASAP

_________________________________________________________________
1.   A grassland community is pictured below.

ScienceBench00010

Grasses are considered –
 (1 point)
secondary consumers
producers
primary consumers
decomposers
2.   A food web is pictured below.

ScienceBench00011

In the food web above, which of the following organisms feeds on the largest variety of different producers?

(1 point)
    ScienceBench00012
    ScienceBench00013
    ScienceBench00014
 ScienceBench00015
3.   An increase in which of the following factors will most likely result in an increase in the size of a population?
 (1 point)
Food
Predators
Competitors
Temperature
4.   The graph shows predator/prey populations over a number of years.

ScienceBench00016

A reasonable hypothesis based on these data is that if the prey population decreases, then –
 (1 point)
bacterial diseases will increase
the predator population will decrease
the prey population will become extinct
decomposer populations will increase
5.   In general, insects benefit flowering plants most by –
 (1 point)
removing nectar
loosening soil
opening flower petals
carrying pollen
6.   Which of the following traits is most influenced by the environment?

(1 point)
Eye color
Body weight
Blood type
Color blindness
Use the information below and your knowledge of science to answer questions 7–9.

ScienceBench00017

7.   A bristlecone pine in the White Mountains usually adds a new ring when which of the following occurs?

(1 point)
Earth’s daily rotation is complete.
The full moon causes a monthly high tide.
Earth’s Northern Hemisphere is tilted toward the sun.
The new moon is visible from Earth’s surface.
8.   How could tree rings from bristlecone pines support the theory that some areas have had periods of drought and flooding for hundreds of years?

(1 point)
By providing evidence of relative precipitation levels
By providing direct evidence of the most recent flood
By showing how humans have affected Earth’s climate patterns
By showing how precipitation levels and temperature changes are related
9.   The dolomite soil keeps the roots of the bristlecone pines cool by –

(1 point)
reflecting the heat energy from the soil around the roots
absorbing chemical energy from the roots
transforming heat energy into chemical energy
transferring thermal energy from the soil to the roots
10.   Which of the following is a biotic factor?

(1 point)
sunlight
worms
water
climate
11.   The picture below shows four varieties of the same species of grass that grow in a prairie ecosystem.

ScienceBench00018

Which variety has the best chance of surviving a long period of dry weather?
 (1 point)
Variety 1
Variety 2
Variety 3
Variety 4
12.   The first organisms to grow in new or disturbed areas are called –
 (1 point)
omnivores
consumers
predators
pioneer species
13.   The table below shows where some birds in a Texas ecosystem are located within the layers of plants in their environment.

ScienceBench00019

These layers begin at the ground and end in the area above the treetops. Which of these would most likely occur if a wildfire destroyed all the plants in the lowest level of this ecosystem?

(1 point)
Doves would have to move to a different area to find food.
Vireos would begin to nest on the ground.
Hawks would begin to hunt for animals in the middle level.
Cardinals would move to above tree level and begin competing with hawks.
14.   Look at the picture below.

ScienceBench00020

If this area were to experience a long drought, which plant population would be the first to DECREASE in number?
 (1 point)
Bushes
Water lilies
Trees
Cattails
Use the short passage below and your knowledge of science to answer question 15.
ScienceBench00021

15.   The high winds of hurricanes and typhoons often destroy mangrove forests. The destruction of these forests most likely affects ecosystems by –

(1 point)
reducing beach erosion in sea-turtle nesting areas
reducing the amount of saltwater flowing into lakes 
causing pollution in inland rivers and streams 
forcing migratory birds to find other places to rest