In the food web below, which organism(s) are secondary consumers?

What would be the correct species identification, using the dichotomous key below, for the top leaf “lady bug” insect?  

Which virus below is characterized by a rash and a fever, the reservoir is humans, and its the same virus that leads to shingles later in life:

Which type of organism fits the following description: prokaryotic, unicellular, cell wall is made of peptidoglycan, autotrophs and heterotrophs, reproduce only asexually, some are motile, they precede eukaryotic organisms.

Which of the following correctly describes a hybrid organism?

Beta 1 receptors are found on cardiac muscle, while Beta 2 receptors are found on the lungs (not exclusively, just generally).

Which answer choice correctly describes carrying capacity?

In the food web below, which organism(s) are producers?

Which answer choice below correctly describes coevolution?  

Which of the following descriptions correctly describes the difference between prezygotic and postzygotic reproductive isolating mechanisms?