Answer:
they developed some structures or parts to survive
the terrestrial environment
Answer:
Upper epidermis
Explanation:
since the sun reach first at the upper epidermis
You're talking about sexual reproduction and asexual reproduction, right?
Well, when there are favourable conditions they use the asexual reproduction because they want to produce as may individuals as possible with the lowest energy use possible.
When the conditions are no longer favourable, they use sexual reproductions, because the egg is more resistant to the unfavourable conditions and is more likely to thrive.
The answers to these questions are the following:
1. uses memory cells to fight off an infection from a pathogen: it is a specific response
2. evident by a sneeze, cough, fever, or other physical symptom: it is a non-specific response
3. recognizes antigens present on pathogens and attacks the pathogen with antibodies: it is a specific response
4. builds immunity to specific diseases that had previously entered the body: it is a specific response
5. does not target specific pathogens: it is a non-specific response