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<u>Answer:</u>
<em>Environmental changes bring changes in the biodiversity too.
</em>
<u>Explanation:</u>
<em>Global temperature </em>change caused by various factors is an example of environmental change. When the temperature changes the <em>flowering pattern of plants and trees</em> are found to change. Many trees bloom at seasons different from their <em>actual blooming season.</em>
When temperature of aquatic environment changes it poses threat to already existing aquatic life. <em>Cold water organisms</em> die off when they become unable to adapt to the temperature change.
The<em> aquatic environment </em>will then be dominated by warm water aquatic organisms. Changes in salinity, precipitation, soil nutrient content etc causes various changes in the <em>flora and fauna of a region.
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The greatest risk to the embryo is 17 - 56 days after conception i.e approximately 2-8 weeks after conception. It is during this stage that the human embryonic development has started and is very crucial to the growth and health of the baby.
Answer:
skin acts as a protective barrier, therefore it does not secrete hormones