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Explain the following;
* Flooding
* Deforestation
* Climate Change
* Loss of Biodiversity
* Urban Sprawl
* Ozone Layer Depletion

1.1.1 In a DNA molecule ...

A guanine pairs with adenine

B adenine pairs with thymine

C cytosine pairs with adenine

D guanine pairs with thymine


antigenic determinant genes are usually removed from the pathogen during generation of attenuated vaccines


if there are beaker labelled A, B and C and in beaker A, 5 viable bean seeds is soaked for 2-3hours then remove the testa of the soaked bean seeds. split open the cotyledons and remove the embryo of each bean seed. place the split cotyledons into the soil and water daily with 5ml what will the reaction be within 7 days . In beaker B, place 5 viable bean seeds into the soil and add some quantity of kerosene enough to cover the surface of the soil in the beaker, what will the reaction be within 7 days. In beaker C, oven dry garden soil in beaker and add 5 dry viable bean seeds into the soil, what will the reaction be within 7 days

Two modes of generating energy in living organisms are


Explain in detail what is an enzyme electrode ?


does the active site of an enzyme sticks to the elctrode ?


1. Explain the role of the hormones listed in the diagram below in the female menstrual cycle.
 

Briefly describe disease and drugs affecting the general areas of functional processing


Name and discuss (in your own words) five major factors (natural as well as human), how they may contribute overtime to South African water crisis. State the effect it has on humans, animals and the environment. Suggest solutions that can be done by households and or government.


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