Carbon is a fundamental element that plays a crucial role in the structure and composition of plants. It forms the backbone of all organic molecules necessary for life, including carbohydrates, proteins, lipids, and nucleic acids.
Plants absorb carbon dioxide ($CO_2$) from the atmosphere during the process of photosynthesis. This atmospheric carbon is then converted into organic compounds, which build the plant's tissues and contribute significantly to its overall mass. When we consider the dry weight of a plant – meaning the weight after all water has been removed – carbon is found to be one of the most abundant elements.
Scientific consensus and biological data indicate that carbon typically accounts for approximately 45% of a plant's dry weight. This percentage underscores the importance of carbon as a primary building block for plant biomass and organic matter. Therefore, understanding the role and quantity of carbon is essential in plant science and agriculture.
Morgenthau's principles of political realism are:
A. Politics is rooted in permanent and unchanging human nature which is basically self centred, self-regarding and self-interested
B. Politics is an autonomous sphere of action and cannot therefore be reduced to morals
C. International Politics is an arena of conflicting self-interests
D. The ethics of international relations is situational ethics which is very different from private morality
Choose the correct answer from the options given below:
Who among the following political thinkers consider the anarchical self help system to be a compelling factor for States to maximise their relative power positions?