Answer:
Option D. Car companies have developed hybrid cars.
Explanation:
Nowadays car companies have developed hybrid cars. In hybrid cars, the cars are moved by using electric energy instead of fossil fuels. Hybrid cars uses batteries which can be charged by electricity and this store electricity is used to run cars. These types of cars reduce carbondioxide emissions and decrease occurs in air pollution.
Answer:
Chiton
Explanation:
Chitons are marine molluscs of varying size :)
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Answer:
A.The strong nuclear force attracts and binds protons and makes the nucleus unstable.
Explanation:
This is called a chemical bond.
The presence of vertebral column or notochord at any stage of life in any organism is the characteristic of vertebrate.
Explanation:
An animal is vertebrate if it fulfils the following criteria:
Presence of vertebral column or notochord.
Presence of endoskeleton or backbone.
The spinal cord runs above the vertebral column.
Humans embryo has notochord which becomes a vertebral column.
The alimentary canals end in the anus.
Mouth is present ta the anterior side of the vertebrate.
Have legs, fins or wings for movement.
Presence of a nervous system and sensory organs.
Presence of skin, lungs or gills.
Presence of a circulatory system.
Vertebrates include fish, amphibians, reptiles, birds and mammals.
