Everything Life Sciences Grade 10

Air: is composed of 78% nitrogen, 21% oxygen, 4% carbon dioxide and water vapour. Look ahead to section on nutrient cycles to r ...

What effect does the environment (abiotic) have on the organisms (biotic) living there? Give FIVE specific examples from your p ...

plastic teaspoon soil sample red and blue litmus paper or universal litmus paper Collect a small sample of soil to test. Plac ...

Date Time Daily Temperature Usethe information in the table to draw a line graph of the temperature over the study period. Draw ...

Wind the string around the wooden sticks so that you create a grid to study within your ecosystem. Make a list of all the plant ...

FACT WATCH:A catchy song about food chains to help you remember: See video: SHORTCODEat http://www.everythingscience.co.za Prim ...

Food pyramid DUMMY Afood pyramid is another way of representing the relationships between organisms in an ecosystem. Trophic lev ...

Figure 9.17: Pyramid of numbers. Food web DUMMY Afood web is made up of a number of food chains. It represents the different fee ...

FACT WATCH:Bill Nye the science guy talks about the food web: See video: SHORTCODEat http://www.everythingscience.co.za FACT WAT ...

Precipitation: water returns to earth through precipitation in the form of rain, sleet, snow or ice (hail). When rain occurs du ...

FACT WATCH:a video about he oxygen cycle. Focus on the first part of the video clip and the summary at the end. See video: SHORT ...

Figure 9.21: The carbon cycle. Nitrogen cycle DUMMY Nitrogen (N 2 ) makes up most of the gas in the atmosphere (about 78%). Nitr ...

FACT South Africa is home to: The largest bird — ostrich The nitrogen cycle is shown in Figure 9.22. Figure 9.22: The nitrogen c ...

Figure 9.23: Cape Town, South Africa is a world-renowned tourist destination. Ethical issues While tourism has great economic po ...

South Africa is rich in cultural diversity, which means that people from different areas have different ways of doing things. L ...

a) Name the: i. producer ii. primary consumer iii. secondary consumer iv. tertiary consumer Primary means first. Secondary means ...

Earthworms will burrow into the soil if they are on the surface and it is daylight. We can explain this behaviour by saying tha ...

biome. c) Define the following terms mentioned in the text: i. endemic ii. alien species iii. indigenous iv. extinct d) Construc ...

In a food chain, energy flows in the following direction: a) producers→ primary consumers→ secondary consumers→ decomposers b) ...

a) Which sample site (A to D) had the highest number of crabs? b) In which sample site was the crabs only rarely found? c) Name ...