===COMPLETED===
PLEASE USE THIS TYPE
Geography type C.
1-10: ccbadcecbc
11-20: dbebcaeeed
21-30: ebeeddbbcd
31-40: dbadbdbbed
41-50: ecaddcedea
51-60: daeecccaec
(2a)
-day and night: as the earth rotates, only one
part of the earth's surface facing the sun
receives the rays of the sun and experiences
daylight(day) while the other part of the earth
backing the sun's rays will experience darkness
(night)
(2b)
tabulate
Rotation:
-the earth rotates on its axis
-rotation causes day and night
-the earth rotates through 360 degree in 24
hours(one day)
Revolution:
-it revolves round the sun along its orbit
-revolution causes seasons
-the earth revolves round the sun in 365 1/4
days(one year)
==========================
7a)
Ecosystem: this is a basic functioning unit in
nature.it is made up of the living and their non
living environment
7b)
i)abiotic factors(non-living thing)
ii)biotic factor
-producer
-consumer
-decomposer
7c)
i)abiotic factor:-these includes basic inorganic
compounds of the environment.e.g carbon-
dioxide,water,nitrogen,temperature,humidity
etc
ii)producer:-they produce their own food by
themselves and they are the main source of
food to other organisms in the ecosystem.they
produce either by photosynthesis or by chemo-
synthesis e.g green plants, algae,photosynthetic
bacteria
iii)consumer:-they are heterotrophic organisms
in the ecosystem which eat other living
creature.they are categorised into herbivores
carnivores and omnivores e.g man,lion,goat etc
iv)decomposers: reducers,decomp
osers,saprotrophs or macroconsumers are
heterotrophicorganisms that breakdown dead
and waste matter.e.g fungi or bacteria.
============================
5a)Chemical weathering:-this is the gradual
disintegration of rocks due to their exposure to
air and water.
5b)
Chemical weathering is higher in tropic region
than the temperate region because of the action
of rainfall.through rainfall the chemicals from
the atmosphere combine together with rain but
the chemical weathering is gradual when their is
high temperature which usually occurs at
temperate region.
5c)
i)Carbonation:-atmospheric carbon dioxide
mixes with the rain water to form weak
carbonic acid.this acid dissolves rocks resulting
in their breakdown e.g igneous rocks changing
metarphic rock
ii)Hydration:-this occurs when rock minerals
absorb water resulting in the chemical alteration
of the minerals e.g conversion of iron to rocks
then to hydrated rock
iii)Hydrolysis:-this is the reaction of water with
rock minerals to produce a trock entirely
different from the original one e.g olivine rock
is changed to serpentine
===COMPLETED===

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