Inglise keel unit 5 answers
slower removal of carbon dioxide;
less, respiration / ATP made;
muscle contraction is weaker / cannot pump as forcefully /
contraction stops;
death of heart muscle;
makes (remaining) heart muscle work harder / hypertrophy; max 3
(ii) angina / chest pain when, exercising / exertion;
reduced ability to perform exercise;
breathlessness;
myocardial infarction / heart attack / cardiac arrest; max 2
[5]
55. idea of soil development; A ref to depth or fertility of soil
(increase), organic material / humus;
(increase) in availability of water;
minerals available; A nutrients
(some pioneer species) carry out nitrogen fixation;
photosynthesis (fixing carbon);