The correct answer is A. An oak tree
Explanation:
The term "primary producer" is used to describe organisms that can produce their own energy without feeding on others, this includes plants and algae that produce food and energy through photosynthesis using light and other inorganic compounds. Additionally, the primary producers can be identified because in ecosystems they are always on the first level and they are eaten by others.
According to this, the one that is a primary producer is an oak tree because this is a type of plant and therefore can produce its food through photosynthesis different to others that need to feed on other organisms to obtain energy.
The age of the Earth is around 4.6 billion years old
“One thing that is poorly understood is population growth in Africa,” says William Cobbett, director of Cities Alliance . “It is thought that populations are growing mainly because of urban migration. That’s not correct. Across the continent, the bulk of population growth comes from natural population growth. Undesa figures from 1950-2050 show that in the case of Uganda – the outlier – its population in one century will multiply 20 times. That has never happened in human history.” Tanzania will grow 18 times and Nigeria 10.5.
“Most local authorities don’t have the capacity to deal with this, so there is no forward planning to make provisions for this population growth, which we know is going to happen.”
His organisation is trying to combat the mindset that you can’t plan for increased slum population, by supporting the creation of municipal development forums in a number of Ugandan cities. These are structured discussions where the local authority, local private sector companies and slum dwellers meet and deliberate about the future of the city.
Having the capacity to plan for future slum populations isn’t just a problem limited to Africa though.
Answer:
C
Explanation:
A and D just doesn't make sense, B is wrong because they have tourists that may spread diseases, so it should be C.
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