Answer:
A pair of nephridia is present on each segment of the earthworm, They are similar to flame cells in that they have tubules with cilia and function like a kidney to remove wastes.
Explanation:
Answer:
Oil and gas production are among the main culprits of air pollution – one of the world's biggest killers according to the United Nations. When fossil fuels are burned by power plants, automobiles and industrial facilities, they generate toxic gases.
A. A steep slope has a higher rate of soil erosion than a rate of soil formation.
Answer:
two
Explanation:
Double-stranded RNA (dsRNA) is RNA with two complementary strands, similar to the DNA found in all cells, but with the replacement of thymine by uracil.
