Answer:
9- C
cellulose strengthens the cell walls present in a plant
enzymes and antibodies are made of proteins
water is the universal solvent.
10- C, all 3
1- cytoplasm contains about 85% of water, which helps in movement within the cells.
2- urine contains 95% of water, and it dissolve urea and salts in it.
3- plasma contains 90% of water, so we can say that water allows transportation of substances in the blood.
<em>Answer:</em>
<em>A group of cells working together is defined as a tissue and several tissues working together comprise an organ. ... The heart is used as an example of an organ which is made up from muscle and valve tissue.</em>
<em>Explanation:</em>
Answer: the area occupied by a population
Explanation:
A population density can be define as the number of individuals of the population of a species living in per unit area over a particular time. Population density may vary depending upon the number of live births, deaths, number of immigrated and migrated members counted in concerned period of time.
Answer:
Population
Explanation:
Population refers to the total number of all members of a species occupying a particular area or habitat or region at a given time. Populations are not static but change in size. Populations make up communities. Community comprise of populations of different species of plants and animals that coexist in a given area. Communities make up ecosystem. An ecosystem is a natural unit composed of living and non-living components whose interactions result in a stable self-supporting system. Ecosystems are generally categorized as either aquatic or terrestrial.
