Una hormiga realiza un recorrido desde el punto de referencia 0; hasta llegar a 40 m. Utiliza como el punto deorigen el número 0 para calcular lo siguiente:¿Cuál es la trayectoria recorrida por la hormiga de ida y vuelta al punto de origen?¿Cuál es su desplazamiento de ida; y el sentido al que se mueve? Utiliza la fórmula de desplazamiento.

explanation:

b,bacteria convert nitrates

into nitrogen gas.

d,plants and animals take in

and use nitrogen compounds.

e,bacteria break down waste    

products and return nitrogen  

to the soil.

a,bacteria convert atmospheric

nitrogen to ammonia.

c,bacteria convert ammonia

to nitrites and nitrates.

the sphincter muscles at the end of the digestive tract is the anus.

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.

answer:

convection currents in the magma drive plate tectonics. heat generated from the radioactive decay of elements deep in the interior of the earth creates magma (molten rock) in the aesthenosphere. the aesthenosphere (70 ~ 250 km) is part of the mantle, the middle sphere of the earth that extends to 2900 km.