Some of the impact of Man is littering in waters and on land. The litters on land causes land animals to die when they eat it thinking that the litters are food. Small land animals will also die when they get trap in litters like plastics and when they cannot find a way out, they struggle to escape and eventually die due to lack of oxygen. The litters on the water will cause the aquatic animal to die as the aquatic animals might swallow the litters thinking it is food and get choked. The litters may also clog up drains causing the water to become stagnant and the stagnant water becomes a breeding ground for mosquitoes which may cause diseases to the animals there.
Due to the construction work at Jurong Lake Park, a layer of oil could be found on some area of the lake probably because of oil spills from the machines. Also, due to litters clogging up some of the drain connected to the lake, the water becomes more polluted as the oil gathers at a certain area of the lake and this causes the layer of oil to get thicker. This is very bad for the aquatic animals as the oil prevents sunlight to enter the water thus the aquatic plants cannot photosynthesise. This means that there will be lesser oxygen for the animals to breathe in and they eventually die. The land animals will also be affected as they drink water from the lake and if the water is polluted, they will die due to toxic materials in the water.
Many trees have also been cut down to get more resources or to get more space to build structures. This is a problem to the animals as there will be lesser oxygen produced. If the rate at which the trees are being cut down is faster than the time for the tree to grow, there will be a major problem as lesser trees means lesser oxygen and lesser oxygen would mean more death of the animals.
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