Balance in a food web The 18 questions of lesson 30 «Balance in a food web» of the world course of Mova's primary school with their options, 101 sentences, every one parsed by Mova with its syntax tree and pragmatics. How the student did on them: the lesson at school .
t1 An island has grass, rabbits and foxes. A disease kills most of the rabbits. What happens to the grass and the foxes? wrong ✗ · ★★★ t2 A meadow has 1000 kilograms of grass a year. Roughly how many kilograms of grasshoppers can it feed? wrong ✗ · ★★★ t3 A farmer kills all the owls on his farm because they scare his chickens. What is likely to happen next? wrong ✗ · ★★★ t4 Why is it impossible to have a habitat with more lions than zebras for long? wrong ✗ · ★★★ t5 A pond food web has algae, water fleas, small fish and a pike. Someone adds many more pike. What happens first? wrong ✗ · ★★★ t6 Bees pollinate a meadow's flowers, birds eat the seeds, and foxes hunt the birds. Bees vanish. Who may suffer, even though they never eat bees? right ✓ · ★★★ t7 A koala eats only eucalyptus leaves; a fox eats mice, berries and insects. Which is in more danger if one of its foods disappears? right ✓ · ★★★ t8 Why is a tiger much rarer than a deer in the same forest? right ✓ · ★★★ t9 A town removes all fallen leaves and dead logs from a park every week for years. What slowly happens? wrong ✗ · ★★★ t10 Sea otters return to a coast. What happens to the kelp forest over the years? wrong ✗ · ★★★ t11 why r there way fewer foxes than rabbits wrong ✗ · ★★★ t12 if the wolves all go wot happens to the deer right ✓ · ★★★ t13 my sister says predators are bad for a habitat and we should get rid of them. true? wrong ✗ · ★★★ t14 Tom reckons almost all the energy an animal eats goes into the next animal. right? wrong ✗ · ★★★ e1 State the approximate proportion of energy transferred from one step of a food chain to the next. wrong ✗ · exam e2 Identify the principal reason for which predators are invariably fewer than plant-eaters. right ✓ · exam e3 Whereas a predator disappears from a habitat, determine the usual consequence for its prey. wrong ✗ · exam e4 Select the response that is consistent with the established facts concerning the return of wolves to Yellowstone Park. wrong ✗ · exam ← previous
Classifying unusual animals
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The skeleton and muscles
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