Question 1

What uses up all of the oxygen due to algal blooms

Accepted Answer

bacteria

Answer

fish

Answer

algae

Answer

fertilizer

Question 2

WHich is a natural  fertilizer

Accepted Answer

manure

Answer

clover

Answer

algal bloom

Answer

chemical

Question 3

WHich is an artificial fertilizer

Accepted Answer

chemical

Answer

nitrate

Answer

ploughing clover

Answer

manure

Question 4

WHich is an artificial fertilizer

Accepted Answer

chemical

Answer

manure

Answer

nitrate

Answer

ploughing clover

Question 5

Explain why are fertilizers used

Accepted Answer

to increase nitrate levels in soil to increase crop yield

Answer

to feed more humans

Answer

to increase nitrogen levels in soil to increase crop yield

Answer

to increase nitrate levels in soil to decrease crop yield

Question 6

Why do plants need nitrate

Accepted Answer

to make protein

Answer

to absorb minerals

Answer

to grow

Answer

for fertilizer

Question 7

Magnesium  is added to fertilizers to increase

Accepted Answer

making of  chlorophyll in leaves

Answer

root growth

Answer

healthy flowers and fruits

Answer

to make protein

Question 8

Potassium is added to fertilizers to increase

Accepted Answer

healthy flowers and fruits

Answer

make chlorophyll in leaves

Answer

root growth

Answer

to make protein

Question 9

Phosphorus  is added to fertilizers to increase

Accepted Answer

root growth

Answer

to make protein

Answer

healthy flowers and fruits

Answer

make chlorophyll in leaves

Question 10

For roots to absorb minerals they must be

Accepted Answer

soluble

Answer

tasty

Answer

nitrate

Answer

insoluble

Question 11

Bacteria decompose dead organic material and turn it into

Accepted Answer

nitrite

Answer

nitrate

Answer

Nitrogen gas

Answer

nitrogen

Question 12

Bacteria convert nitrite in soil into

Accepted Answer

nitrate

Answer

nitorgen

Answer

nitrite

Answer

fertilizer

Question 13

when crops are harvested

Accepted Answer

Nitrogen is taken out of the cycle

Answer

Nitrates are lost

Answer

Nitrites are increased

Answer

algal blooms occur

Question 14

When Nitrogen fertilizers are washed into rivers and lakes it causes

Accepted Answer

algal blooms (increase in algal growth)

Answer

oxygen levels to increase

Answer

oxygen levels to decrease

Answer

fish to die

Question 15

Algal blooms in  rivers and lakes  cause

Accepted Answer

aquatic plants to die as prevent photosynthesis

Answer

fish to die

Answer

oxygen levels to decrease

Answer

oxygen levels to increase

Question 16

What happens when algal blooms cause aquatic plants to die

Accepted Answer

bacteria numbers increase

Answer

bacteria get bigger

Answer

bacteria numbers decrease

Answer

fish  die

Question 17

What happens when bacteria numbers increase

Accepted Answer

decreases oxygen levels which decreases biodiversity

Answer

decreases oxygen levels which increases biodiversity

Answer

increases oxygen levels which decreases biodiversity

Answer

increases oxygen levels which increases biodiversity

Question 18

What are bacteria which breakdown dead organic material called

Accepted Answer

decomposers

Answer

bacteria

Answer

rude

Answer

hungry

Question 19

form of Nitrogen in soil which plants use to make proteins

Accepted Answer

nitrate

Question 20

term which describes farming which maximises productivity by increasing the use of chemicals

Accepted Answer

intensive

Question 21

term which describes the range of different species in an ecosystem

Accepted Answer

biodiversity

Related quizzes

Related quizzes