This is the autumn's tree.
Deforestation affects the lives of many people, and many of the world's species of flora and fauna. Many indigenous peoples of the rainforest are losing their land to deforestation, often being threatened by the logging companies to relinquish thier land or suffer dire consequences, including death. According to National Geographic, seventy percent of the world’s land animals and plants live in rainforests. Due to deforestation, biodiversity in rainforests will change, which forces animals to adapt to new conditions. Unfortunately, this rapid change often leads to the extinction of species. Currently, we have an unprecidented rate of speicies loss occurring worldwide, partially due to deforestation of these biodiverse regions. Additionally, many pharmaceutical companies derive medicines from plants found in the rainforest. Research done by the University of Michigan suggests that 25% of pharmaceuticals come from rainforests, and with the current rate of deforestation, our planet is losing a potential resource for an advancement in medical research and medicines. The cure for many diseases, including cancer, may lie somewhere in the rainforest just waiting to be discovered, if we can manage to save the world's last remaining rainforests.
Rainforests help our planet in several ways. National Geographic states that rainforests help regulate the world’s climate by releasing water vapor back into the atmosphere. Without trees, particularly rainforests, water vapor cannot be circulated back into the atmosphere, and existing forests can eventually dry up, leading to what is referred to as desertification. National Geographic states that rainforests help generate rainfall in areas that are prone to droughts and that the destruction of these rainforests can cause long droughts in several countries worldwide, such as Kenya, Nigeria, India, and several other countries. Additionally, the roots of trees also help stabilize soil and prevent the erosion of valuable earth. And of course, there are several recent studies that link deforestation to global warming. This is because trees consume/filter carbon dioxide, which is one of the main greenhouse gasses. When a tree is cut down and/or burned, the tree releases the carbon dioxide that it stored as energy into the atmosphere, further contributing to global warming.
Global warming is the increase in the average measured temperature of the Earth's near-surface air and oceans since the mid-twentieth century, and its projected continuation.
The average global air temperature near the Earth's surface increased 0.74 ± 0.18 °C (1.33 ± 0.32 °F) during the hundred years ending in 2005 .The Intergovernmental Panel on Climate Change (IPCC) concludes "most of the observed increase in globally averaged temperatures since the mid-twentieth century is very likely due to the observed increase in anthropogenic (man-made) greenhouse gas concentrations" via an enhanced greenhouse effect. Natural phenomena such as solar variation combined with volcanoes probably had a small warming effect from pre-industrial times to 1950 and a small cooling effect from 1950 onward.
These basic conclusions have been endorsed by at least thirty scientific societies and academies of science,[4] including all of the national academies of science of the major industrialized countries.[5][6][7] While individual scientists have voiced disagreement with some findings of the IPCC,[8] the overwhelming majority of scientists working on climate change agree with the IPCC's main conclusions.
Climate model projections summarized by the IPCC indicate that average global surface temperature will likely rise a further 1.1 to 6.4 °C (2.0 to 11.5 °F) during the twenty-first century. This range of values results from the use of differing scenarios of future greenhouse gas emissions as well as models with differing climate sensitivity. Although most studies focus on the period up to 2100, warming and sea level rise are expected to continue for more than a thousand years even if greenhouse gas levels are stabilized. The delay in reaching equilibrium is a result of the large heat capacity of the oceans.
Increasing global temperature is expected to cause sea level to rise, an increase in the intensity of extreme weather events, and significant changes to the amount and pattern of precipitation. Other expected effects of global warming include changes in agricultural yields, modifications of trade routes, glacier retreat, species extinctions and increases in the ranges of disease vectors.
Remaining scientific uncertainties include the amount of warming expected in the future, and how warming and related changes will vary from region to region around the globe. Most national governments have signed and ratified the Kyoto Protocol aimed at reducing greenhouse gas emissions, but there is ongoing political and public debate worldwide regarding what, if any, action should be taken to reduce or reverse future warming or to adapt to its expected consequences.
I use gradient tool, to colour the saw. Just drag on the object to colour it.
I fill in all the colours of the head bone and continue with the bone.
Keep drawing the shape inside of the bone head, to create the shape of the land, while others as the ocean.
The same, I use pen tool to draw the bone behind the head. then I open grid, and snap to object. so that I can drag it and stick it to the head.
First, I use pen tools to draw out the shape of the water. then I click on each point and use direct selection tools to bend it. 
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