1.
Which of the following diseases is transmitted indirectly through a vector?

Malaria
Cholera
Common Cold
Athletes Foot
2.
Another word for communicable diseases is .

vector
epidemic
infectious
indirect contact
3.
Botulism is a bacteria caused illness found in raw eggs. It causes diarrhea symptoms. The transmission of this disease would best be described as .

vector
airborne
oral-fecal
indirect physical contact

- calcium has greater affinity to bond with electron receptors than hydrogen does and hence, it has the ability to replace hydrogen in most of its compounds.

- lithium has 2 valence electrons in the product because it can make only 1 bond with hydrogen. beryllium has 4 valence electrons in the product because it can only make 2 bonds. it has fewer electrons than neon and can react with electron donors. each hydrogen has 2 valence electrons, the same as helium.

- the covalent bond formed between carbon and hydrogen is polar because carbon is more electronegative than hydrogen and it attracts the bonded electron pair closer to itself, thus giving hydrogen a partial positive charge.

- a hydrogen bond is a relatively weak bond that hydrogen atoms make with the electronegative atoms nitrogen, oxygen or fluorine.

so the best choice is a.) 2 calcium (ca) atoms

it should be all of them because it asks if you included all of those in your answer

explanation: