1) sugar is classified into which nutritional group?

2) for a unicellular organism to live, what must it do?

3) give an example of an organism that can cause a contagious disease.

1:  carbohydrates.

2: Most often they eat other organisms, the some kind of them such as plants or protist can make their own food.

3: Fungi and worms can cause some diseases under certain conditions.

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.

chert is a sedimentary rock composed of microcrystalline or cryptocrystalline silica. with this little bit of information, you can come to the conclusion that your answer is c.  

explanation: