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Jlenok [28]
2 years ago
14

Where did DDT come from?

Biology
1 answer:
laiz [17]2 years ago
8 0

Answer:

Originally developed as an insecticide, it became infamous for its environmental impacts. DDT was first synthesized in 1874 by the Austrian chemist Othmar Zeidler. DDT's insecticidal action was discovered by the Swiss chemist Paul Hermann Müller in 1939.

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Although a manatee is sometimes called a "sea cow," in what way is it more like a horse than a cow?
sergiy2304 [10]

Answer: They are both large and eat plants. They also have long intestines

Hope this helped :)

Explanation:

3 0
3 years ago
A common element among all the river valley civilizations was:
Free_Kalibri [48]

Answer:

<u>A common element among all the river valley civilizations was irrigation systems that moved water to crops and settlements</u>

Explanation:

  • <u>River Valley civilizations where the civilizations that were found on the banks of the river like the Mesopotamia ,Indus valley civilization.</u>
  • <u>These civilization where agriculture based civilization as they depended on river for drinking water and irrigational activities</u>

8 0
2 years ago
Read 2 more answers
What are the cause.s of monocultures,loss of topsoil.alien species
kirza4 [7]

The causes of monocultures are the economics of global product of agriculture, standard of industrial society, and the apparent “simplicity” of managing only one crop.

The major cause of the loss of top soil is soil erosion (which is caused by the factors like water, wind and tillage of farm fields). Loss of top soil become a global problem for agriculture.

<span>A species that are occurring outside of its normal distribution are known as Alien species. The cause of alien species is that these species are not native to ecosystem and they can cause harm to the environment.</span>

3 0
2 years ago
All claims in science should be supported by biology
kondor19780726 [428]

Answer:

yes

Explanation:

Because science &biology have a connection

4 0
3 years ago
Cilia are composed of microtubules. How are microtubules different from the other cytoskeletal filaments?
Maru [420]

Answer:

They are thick, strong and made up of thousands of tubulin which are spiral in shape.

Explanation:

In eukaryotic cells, they have microtubules which are fibres serving as tracks for cell to cell transport and regulate the shape of a cell.

Microtubules are different from other cytoskeletal filaments because they possesses a cylindrical shape with the tube having a larger diameter of 20-25 nm as compared to microfilament that have a diameter of 3-6 nm.

Microtubules are made of subunits of proteins called tubulin named alpha and beta that is not present in other cytoskeletal filaments.

4 0
3 years ago
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