Answer:
Weakening of digestive smooth muscle with age can cause constipation.
Explanation:
Smooth muscles in the digestive system have the role to move food down the tract via radially symmetrical contractions (peristalsis). With age, the function of smooth muscles reduces, causing the food to move more slowly through the alimentary canal (digestive tract). As a consequence, water gets absorbed from food waste, which can cause constipation.
A is the right answer because it is.
Answer:
Option-C
Explanation:
Scientists found a fossil of a fish with four limbs or legs. The fossil was estimated to be around 375 million years old.
The fossil showed the fins and scales of a fish but they also possess the bones of proto-wrist, shoulders and the elbow.
The presence of these bones can be a clue that the fish evolved the limbs to walk on the land and will later evolve into animals belonging to amphibians, reptiles and mammals. Therefore, the Tiktaalik is considered the missing link of how life evolved from water to land.
Thus, Option-C is correct.
Thermochemical conversion is a process which is used to produce solid, gaseous, and liquid fuels.
<h3>What are the processes of biomass production in generation of gas</h3>
Biomass is converted into energy through various processes such as Direct combustion means burning to produce heat. Thermochemical conversion is a process which is used to produce solid, gaseous, and liquid fuels while on the other hand, Chemical conversion is a process to produce liquid fuels.
So we can conclude that thermochemical conversion is a process which is used to produce solid, gaseous, and liquid fuels.
Learn more about biomass here: brainly.com/question/82777
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Answer: Yes this chemical reaction obeys the laws of physics. Its very simple, let me explain.
Explanation:
When Iron(Fe) oxidizes it gains three oxygen atoms so it reacts to form Fe2O3 so it becomes bigger or explands. Its also sometimes called "oxide jacking".
