4(a)i 1 it results to continous dehydration 2 it causes exhaustion 3 it may lead to blurred vision 4 it also leads to loss of weight ii 1 remoaval of meta ic waste product from the body 2 maintaining the balance between water and salts in the body (b)i 1 erosion . 2. heavy rainfall ii 1 international red cross society 2 united nations childrens education fund (UNICEF) 3 world Health orgnization (WHO) 4 Nigerian medical association (NMA) (C)i 1 sunlight 2.salinity 3.wind 4.temperature ii 1it leadsto cellular differention 2 their surface area to volume ratio is small iii 1 olumu forest reserve in kwara 2 yankari game reserve in bauchi state 3 Borgu game reserve in Niger state 3(a)i Diffusion is the rapid movement of molecules of substances gas,or liuid from a higher concentration to a lower concentration .it occurs in living orgnism ii 1 gamates are formed/no gamates are formed 2 involves fusion of male and female gametes/no fusion occur 3 zygote is formed/no zygotes if formed 4 usually involves two individuals/ only one organism involved (b)i external respiration is the exchange of gases between the environment and respiratoryorga ns of organism. ii 1 it provides food for both plants and animals 2 it release oxygen to the environment 3 it serves as a building blocks for substances 4 it involves in the purification of the atmosphere (c) i 1.dodder 2.mushroom 3.venus sun trap ii 1 possession of pairs of limb 2 possessionof feather 3 possession of wings 4 possession of pentadacty
Posted on: Tue, 25 Jun 2013 10:22:07 +0000
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