It’s either A or B
Diseases can often cause a decrease in the population
But also without healthy grass for them to eat, they begins to die off cause of not a lot of food left for them to eat enough to survive.
The correct option is C.
Obligate anaerobes are micro organisms that are poisoned and killed when exposed to the normal atmospheric oxygen concentration. These organisms can only survive in the absences of oxygen, therefore, they carry out only anaerobic form of respiration in order to obtain the energy that they need. <span />
Number 3 and 4 are the correct answers hope this helped
A simple example is a connection between the circulatory and respiratory systems. <span>As </span>blood<span> circulates through your body, it eventually needs fresh oxygen </span><span>from the air. When the </span>blood<span> reaches the lungs, part of the </span>respiratory system<span>, the </span>blood<span> is re-oxygenated.</span>
1. gamete production
2. sperm transported near egg
3. fertilization
4. zygote forms
