Biology 0610: HUMAN INFLUENCES ON ECOSYSTEMS Topical Past Paper Questions

(a) Figure 4.1 shows a cross between a chicken that is pure-breeding for white feathers and a chicken that is pure-breeding for black feathers. All of the offspring have black and white feathers that are described as speckled. parents offspring Figure 4.1 The allele for white fea…

Chickens are birds that are bred by farmers to produce eggs and meat. Modern farmed chickens are very different from the red junglefowl that is their wild ancestor. Table 2.1 describes some of the characteristics of red junglefowl and farmed chickens. Table 2.1 (a) (i) Using Tabl…

Fig. 6.1 shows the total mass of plastics waste produced in the world since 2000 and what happens to that plastic. The data from 2020 to 2050 are predictions and are shown as dashed lines on Fig. 6.1. mass of plastic /million tonnes total plastics waste Fig. 6.1 (a) (i) Using the…