Chlamydomonas contains (a)   to carry out the process of photosynthesis.

State whether the statement below is true or false.

The effect of CFC is thinning of ozone layer.

(a)  

State whether the statement below is true or false.

CFC dissolves in the soil and causes plants to die.

(a)  

State whether the statement below is true or false.

Biological control can be used to control the use of CFC.

(a)  

State whether the statement below is true or false.

Hydrochlorofluorocarbon (CHFC) is used to replace CFC.

(a)  

State the type of root for this maize tree.

(a)  

State the type of leaf for this hibiscus tree.

(a)  

State the substance used to treat acidic soil.,

(a)  

Name the part P shown in the diagram given.

(a)  

State one condition for germinating seed.

(a)  

State one factor necessary for the process of photosynthesis.

(a)  

What is the type of circuit shown in the diagram given?

(a)  

Complete the word equation below.

Hydrochloric acid + sodium hydroxide = (a)   + water

State the type of gas used to fill air balloons and weather balloons.

(a)  

State the type of gas used to fill bulbs.

(a)  

Based on the diagram given, state the phenomenon occurred.

(a)  

State one final stage of the death of star.

(a)  

State one type of unit used to measure the distances of the planet in the solar system from the sun.

(a)  

State one way heat flow from hot region to the cold region.

(a)