1. In this question you will be assessed on using good English, organising information
clearly and using specialist terms where appropriate.
Light intensity, carbon dioxide concentration and temperature are three factors that affect the rate
of photosynthesis
How would you investigate the effect of light intensity on the rate of photosynthesis?
The image below shows some of the apparatus you might use,
Pondweed
Not to scale
You should include details of:
.
how you would set up the apparatus and the materials you would use
the measurements you would make
how you could make this a fair test.
No

The difference between the atomic number of an element and the element’s atomic mass is the number of ions.

Agroup of students is studying convection current. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other is in an area with warm air. after 10 minutes, the balloon are released from a height of 1 meter. which of the following to the students most likely observe? a) the warm balloon expands and rises. the cold balloon shrinks and sinks b) the balloon both rise. the cold balloon is larger than the warm balloon c) the cold balloon expands and rises. the warm balloon shrinks and sinks d) the balloon rise at the same rate. both balloons are the same size

How does climate change cause the ocean's thermohaline current to slow down?