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Step2247 [10]
2 years ago
12

Why do farmers spray pesticides and insecticides in the field​

Biology
1 answer:
denis23 [38]2 years ago
6 0
Answer:

Farmers utilize pesticides to help control the thousands of weed species, harmful insects, and plant diseases that can afflict crops, period. ... Pesticides don't only affect food crops though; production of certain fibers and oils would also be affected, as crops like cotton are highly susceptible to pests and disease.

Explanation:
You might be interested in
Mouth, pharynx, esophagus, stomach, _______
Nimfa-mama [501]

Answer:

mouth, pharynx, esophagus, stomach, Small Intestine.

Large Intestine.

Rectum.

Accessory digestive organs: liver, gallbladder, pancreas.

5 0
3 years ago
Certain hazards are associated with planting, managingharvesting, and burning trees for biomass. What are two safe practices tha
Naily [24]

Hazards are associated with planting, managing, harvesting, and burning trees for biomass.

Explanation:

Biomass, an alternative for fossil fuel, is a renewable source of carbon-based energy sourced from burning plant matter, organic or food waste, and industrial waste.

Environmental hazards

Biomass production requires large scale of plants or trees to be burnt to produce energy which in turn demands more water and pesticides and causes soil erosion. When large number of trees is cut, it leads to deforestation and increase greenhouse gas which in turn leads to global warming.

The managers who practice biomass production should successfully mitigate the environmental hazards by following sustainable measures of biomass production

Operational hazards

During the operation of biomass production, a lot of risk can happen during fuel delivery, storage, handling, and during combustion operations.

  • Mechanical risk injury from mechanical conveyors, pneumatic delivery system
  • Dust explosion from finer fuel elements
  • Explosion and fire from storing and handling biomass fuel
  • Slips and falls during operations and storage.
  • Wet side and fire side risks of using boilers.

Hence, during production, storage, handling, and delivery proper stringent risk assessment must be taken regularly by the managers and necessary protection measures should be followed to avoid risks and hazards.

For example, to avoid mechanical injuries, proper care must be taken to maintain the production equipment

Proper storage rules should be maintained and checked to see if bunkers are filled only to the optimal level and not overfilled.

4 0
3 years ago
Solid substance A has a melting point of 100°C. Liquid substance B has a freezing point of 110°C. For each substance, identify i
Liono4ka [1.6K]

Answer:

Solid substance A has a melting point of 100 degrees Celsius. In this case, the substance is in the liquid state at 115 degrees Celsius. Liquid substance B has a freezing point of 110 degrees Celsius. In this case, once it reaches 115 degrees Celsius, the substance is still a liquid.

Hope it helped! <3

Explanation:

5 0
3 years ago
How does the heliocentric model of planetary motion explain a star's path across the night sky?
netineya [11]

Answer:

The Rotation of earth makes objects in the sky appear to move

8 0
2 years ago
Both ancestral birds and ancestral mammals shared a common ancestor that was terrestrial. Today, penguins (which are birds) and
kotegsom [21]

Answer:

C) homologous; analogous

Explanation:

The relationship between of the bones in the forelimbs of penguins and seals is a homology.  

Homology is the  shared ancestry between a pair of structures - in this case the forelimbs- in different taxa - in this case penguins and seals-. The forelimbs of vertebrates is a common example of homologous structures because they derived from the same ancestral tetrapod structure.

On the other hand, the relationship between the pinguins flippers and the seals flippers is an analogy.  

Structures of two different organisms with similar functionsare analogus if they are similar  in function  - in this case for swimming- due to convergent evolution but not due to common ancestry. Pinguins flippers and  seals flippers have similar function but different ancestry, therefore they are analogous structures.

7 0
3 years ago
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