Petroleum is not a source of coal or coal-precursor.
Mutualism is an association between organisms of two different species in which each benefits. Mutualistic arrangements are most likely to develop between organisms with widely different living requirements. In this case; The Lichens growing on the soil, stabilizes the sand so erosion does not occur supplies nitrogen through fixation. Destruction caused by humanity.
Answer: 2
Explanation:- Mechanical advantage is the ratio of the output force to the input force.
Mechanical advantage=
Given:
Input force = 320 N
output force= 640 N
Soy inglés. Solo hablo un poco de español, disculpe si la traducción es mala
1) Utilice botellas de agua reutilizables
2) No pongas químicos peligrosos por el desagüe
3) Reciclar aceite de motor
4) Reciclar plasticos
5) Reducir las emisiones de automóviles
6) Iniciar una pila de compost
7) Educar a las personas
8) Camina, no conduzcas
9) Deja de fumar
10) Reducir la deforestación
Answer:
oxygen: it was the result of biological activities. There were such stable continental shelf environments, which were rare in the Archean, developed after 2.5 billion years ago, facilitating the growth of photosynthetic organisms and thus oxygen production.
