2.An atom that gains or loses an electron has a net electric charge and is called a/n
A. ion.
B. proton.
C. neutron.
D. electron
3. The two subspecialties of astronomy are
A. astrophysics and planetary science.
B. climatology and atmospheric chemistry.
C. environmental earth science and environmental chemistry.
D. paleontology and geochemistry.
4. A _______ satellite records reflected wavelengths from Earth's surface
A. GIS
B. GPS
C. Landsat
D. SeaBeam
5. Magma is classified as basaltic, andesitic, or rhyolitic based on what factor
A. Temperature of the magma
B. Region of the Earth in which it formed
C. Amount of silica it contains
D. Amount of pressure placed on it during formation
6. All the water on Earth, including the water in the atmosphere, makes up the
A. biosphere.
End of exam
B. hydrosphere.
C. geosphere.
D. atmosphere.
-mouth
-stomach
-esophagus
-pharynx
-small intestine
Answer: The correct answer is Mouth, Pharynx, Esophagus, Stomach, and Small intestine.
Alimentary canal is also known as digestive tract. It represents a pathway through which food is first taken in, then allowed to digest and finally the undigested food in released through anus.
From the given options, the structures included in the alimentary canal are (in the order)- Mouth- Pharynx- Esophagus- Stomach- Small intestine.
Mouth is the structure that ingests the food. Digestion begins in the mouth itself. It starts the digestion of carbohydrates through salivary amylase enzyme.
Pharynx is a muscular flap that aids the movement of food in the esophgus, which helps in the swallowing through peristaltic movements.
Stomach lies after esophagus. Protein digestion takes place in stomach.
Small intestine is a coiled tubular structure where complete digestion of food takes place. It is also the site of absorption of nutrients.
Answer: fixed action B
Explanation:
Answer: Option (C) is the correct answer.
Explanation:
Once the cats escaped from the puzzle box, then in their conscious mind they tend to develop the image of path through which they had escaped.
So, form next time onward they tend to move more quickly because they already know the path through which they had to escape.
Hence, we can conclude that after receiving a reward for escaping the puzzle box, the cats gradually learned to escape more quickly.
Answer:
The change in the internal body temperature can be maintained by the various types of systems present inside the body which maintains an equilibrium in between the body and outer environment.
Homeostasis can be defined as the biological phenomenon that takes place inside the body to resist the change inside the body.
The negative feedback resists the changes inside the body that occurred due to change in the outer conditions. There can be multiple changes inside body in order to stabilize the body.