Science Combined 0653: B12. Human influences on ecosystems Topical Past Paper Questions
Cambridge IGCSE Science Combined (0653) past-paper questions on B12. Human influences on ecosystems, free. This topic is frequently examined across 26 exam sessions. Sign in for the full topic-segregated question bank and AI worksheets.
Sample questions
The list shows four fractions obtained from petroleum. ## bitumen diesel oil naphtha efinery gas (a) Each fraction contains molecules of different chain length. Place these fractions in order of increasing chain length. shortest chain length $\longrightarrow$ longest chain length…
Fig. 3.1 shows a food web from a grassland habitat. Fig. 3.1 (a) The food web in Fig. 3.1 is not complete. The hawk also eats the mouse and the rabbit. (i) Complete the food web in Fig. 3.1. [1] (ii) Identify one herbivore in Fig. 3.1. [1] (b) People living near the grassland hab…
Carbon dioxide is a greenhouse gas. (a) Complete the sentence about greenhouse gases in the Earth's atmosphere. Increased concentrations of greenhouse gases cause an greenhouse effect. ..... (b) Table 8.1 shows some reactions that make carbon dioxide. Complete Table 8.1 by statin…
Sign in required
Full B12. Human influences on ecosystems question set, mark schemes and AI worksheets
Log in for the full topic-segregated question set, mark schemes, and AI worksheets built from every Science Combined past paper. New accounts start with 25 free credits.
Explore all Science Combined topics
All Science Combined topics