1. right atrium
2. aortic valve
im not sure if that is the answer
thats what i got
Answer A:
1. Spiral chloroplast:
This organelle help in photosynthesis, because it contain green pigment called chlorophyll in which water and carbon dioxide combine in the presences of sun light to prepare glucose.
2. Cell wall:
It is chemically composed of<span> an outer layer of pectin and an inner layer of cellulose. It provide rigidity and shape to spirogyra cell.</span>
Answer B:
The other parts which are not labelled include mucilage, cytoplasm, pyrenoids, cytoplasmic strand.
Answer C:
Function of pyrenoid:
<span>Each chloroplast strand has several round bodies called 'pyrenoids', which are responsible for starch production.
</span>Function of mucilage:
Mucilage help in retaining water in cell.
GENETIC VARIATION IS CREATED WITHIN A POPULATION
Answer:
a four-footed animal, especially a member of a group which includes all vertebrates higher than fishes. Not sure how to answer the second question.
Explanation:
Answer:
True
Explanation:
This statement is true. Medical researchers at Harvard and Stanford universities found that leading a sedentary lifestyle (sedentary meaning minimal exercise with little movement) leads to a higher risk of health complications (which can be more prevalent in older age).
This finding strongly recommends that middle-aged people should undertake some form of regular exercise so as to not fall into the category of "sedentary".
