It is between A and B.
But if the species is going to be extinct, that means that they are being threatened.
So the answer is B.
Rock Mineral
Explanation:
Rock minerals are naturally occurring inorganic solids with a definite chemical composition and an orderly arrangement of atoms.
Minerals forms as a result of combination of different elements.
The minerals makes up rocks. A rock is an aggregate of minerals.
- They are naturally occurring: minerals are not formed in the laboratory through a synthetic process.
- The are inorganic: not formed by living organisms.
- Solids: minerals are in the solid phase of matter
- definite chemical composition: they are compounds and not mixtures.
- Orderly arrangement of atoms: they are crystalline
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Answer:
Microscopes are often used to examine specimens which are too small to see in detail using only the human eye. Which of the following procedures should be followed prior to placing a specimen slide on the stage of the microscope?
Turn the objective lens to the lowest magnification setting.
Explanation:
Turnin of objective lens to the lowest magnification enhances visibility which would allow the lens to focus on the specimen clearly. It is always important to start with the lowest magnification.
Answer:
D Africa
Explanation:
African leaders have pledged to devote more resources to the development of science and technology, an area deemed vital for economic development, yet long neglected and poorly funded in many countries. At a January 2007 summit of the continent’s political body, the African Union, heads of state “strongly urged” all AU countries to allocate at least 1 per cent of their gross domestic product to research and development by 2020. They also pledged to revitalize African universities — many of which have declined due to dwindling support over the last few decades — and to promote the study of science and technology by young people.
Answer:
the early Earth atmosphere, as they pictured it, was capable of producing amino acids, the building blocks of life, from inorganic substances.
Explanation:
