Lead emission since early 1980s have DECREASE DUE TO LEAD FREE GASOLINE.
Lead is a natural occurring element that is found in small quantity in rocks and soils. Lead emission is an important environmental health issue because a very small quantity of lead can cause adverse effects on the nervous system of unborn babies and young children. Because of this, the government took all necessary measures to ensure that its emission was drastically reduced.
Answer: a space or vesicle within the cytoplasm of a cell, enclosed by a membrane and typically containing fluid.
a small cavity or space in tissue, especially in nervous tissue as the result of disease.
Origin
mid 19th century: from French, diminutive of Latin vacuus ‘empty’.
Translate vacuoles to
Use over time for: vacuoles
Explanation:
The asthenosphere lies 80-200km below the surface under the lithosphere. Convection also occurs in the asthenosphere. The asthenosphere is mostly made of up rock material (magnesium and iron silicates). The asthenosphere makes up 6% of the mantle and lets the lithosphere move.
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Answer:
combines genes from organisms of different species in a lab
Explanation:
Recombinant DNA technology involves the process of joining the genes (DNA) of different multiple species in order to insert into another organism (host). Recombinant DNA technology has many applications in genetic engineering.
One example of Recombinant DNA is the synthesis of Insulin in bacteria cell where a human insulin gene is first inserted into a plasmid vector, then inserted into a bacterial cell that uses its expression abilities to transcribe and translate the gene into INSULIN protein.
This procedure is usually conducted in a laboratory with the use of certain laboratory equipments.
The main and the most promising difference between active and passive transport is, passive transport does not require energy while active energy does.
