Answer:
Mechanical digestion begins in the mouth as the food is chewed. Chemical digestion involves breaking down the food into simpler nutrients that can be used by the cells.
Explanation:
Chemical digestion begins in the mouth when food mixes with saliva. Saliva contains an enzyme (amylase) that begins the breakdown of carbohydrates.
Answer:
C. Running on track
Explanation:
kinetic energy depends upon velocity
(or speed of object )
hence , more the velocity ,
more kinetic energy it have.
so during running , we are in highest velocity
<h3>hope it helps</h3>
The answer is no, high biological fitness in one environment doesn’t have to be high in another environment.
Biological fitness is a term used in evolutionary biology and it is the quantitative representation of how a genotype (or phenotype) is successful (reproductively) in a certain environment. Fitness depends on environment so it changes if the environment changes. The fitness of a genotype is manifested through its phenotype, which is affected by the environment.
The correct answer is social potency, achievement.
Twin studies are commonly used to study the environmental or genetic effect on the development of personality or general psychological traits. Social potency is a term referring to the need for social dominance and having an impact on other people. It has been shown that the personality trait related to the need for achievement does not have a strong genetic component. This is contrary to the trait of social potency which was found to be greatly affected by the genetic background.
Explanation:
Where possible, we can switch to renewable sources of energy (such as solar and wind energy) to power our homes and buildings, thus emitting far less heat-trapping gases into the atmosphere.
