couple of questions regarding biology test

[serious7]

Hi, i'm a grade 10 high school student and i just had my biology test today. Basicly, i'm kind-of worried as the test was sortoff (bullshit) xD. Some of the questions wasn't even in our review so i'm deeply worried. I remmeber some of the multiple choice questions and i want to know your opinions as to what the answer may be.

 

1. Could the spring runoff off fertilizers that contain nitrogen and phosphorus be:

 

a)generally beneficial to the ecosystem

b)help grow excessive algae

 

I put answer A.

 

2. Which of the following biomes is best suitable to having trees losing leaves in the winter.

a) tundra

b)tropical rain forests

c)deciduous forest

d) all of the above

I put answer C.