Biologists think that endosymbiosis gave rise to mitochondria before plastids partly because: (All eukaryotes have mitochondria whereas many eukaryotes do not have plastids)
B) Primary is where there is nothing no rock or soil
DNA is replicated during the “S” phase (synthesis).
Answer:
1. nitrogen fixing bacteria soil converts excess "nitrates"
Explanation:
usually caused by low h2o, water movement and lack of minerals to filter water and kill bacteria..
2 primary components of septic system are tank and a septic pump to regulate waste and store it in a tank underground. when full, a service has to engage in emptying the tank or it will contaminate water supply...
Answer:
sorry I don't know understand
