Answer:
<em>The correct option is B) Nutrients</em>
Explanation:
The availability of nutrients is very essential for a producer to survive. If nutrients will not be available, then the plant will not be able to carry out the essential processes which are required for its healthy living. The primary producers like plants take up nutrients from the soil.
Although, temperature and altitude also have an effect on the primary productivity but they can maintain homeostasis and hence these features will not affect that plant as much as the availability of nutrients.
HEY THERE
I bielieve the answer is the second choice
<span>Science relies on fixed experimental results that cannot be changed over time.
Hope this helps</span>
Since you are trying to investigate the possible variables that contribute to reef threats, it is advisable that you do an environmental study between two reefs that have characteristics that are similar or are closely similar. With this, you will be able to identify which is the primary cause of reef threats. Thus the correct answer is B.
Ticks are a type of parasite
