VRAAG 2 Bestudeer die volgende diagram van die menslike sirkulatoriese stelsel en beantwoord dan die vrae. KLIK OP DIE KNOPPIE HIERONDER OM DIE DIAGRAM OOP TE MAAK:

1.11 Use the information in the table to calculate the average lifespan (in years) of an elephant. Show ALL workings. (3)

2.2   Waarom word oefening aanbeveel?  (3)  

1.5  Identifiseer die onafhanklike veranderlike.  (1)  

2.1 Discuss two differences between arteries and veins. (4)

1.8    Hoe kan jy die betroubaarheid van die eksperiment verhoog?     (3)  

1.10   Noem twee maniere hoe meer akkurate mates geneem kan word.    (2)  

1.6    List three variables that you kept constant?    (3)  

2.4 Provide the journey of a deoxygenated red blood cell as it travels from the heart into the lungs.  Choose the correct options from the dropdown buttons below.   (6)   The [1] contracts and the blood is forced through the [2] into the [3], which branches into the [4].  The arteries branch into smaller [5], transporting the blood to the lungs.  In the lungs, these blood vessels branch further to form the [6] of the lungs.  

Die tabel hieronder toon die rustende polsslag van verskillende soogdiere en die aantal slae in die gemiddelde leeftyd van elke organisme.   KLIK OP DIE KNOPPIE HIERONDER OM DIE TABEL OOP TE MAAK: