Indique si los sistemas son abiertos, cerrados o aislados:
1. Gas que se expande en un cilindro provisto de un embolo.
2. Caldera de una máquina térmica
3. Cohete .
4. Vaso con agua .
5. Termo lleno de agua caliente
6. Estadio .
7. Una planta desalinizadora de agua de mar .
8. Helio contenido en un globo que se calienta bajo la acción de la radiación solar. .
9. Lata de gaseosa dentro de una cava de icopor o de anime .

What are two reasons for why a species might disappear from the fossil record?

Dna is colied into chromosomes in a cell

Complete the sentences by matching the names of trees to the appropriate blanks. to do this, drag the names on the left into the appropriate blanks in the sentences on the right. match the words in the left column to the appropriate blanks in the sentences on the right. terms may be used more than once. make certain you have filled every blank with a term before clicking submit. 1. deciduous trees lose their leaves seasonally and include trees such as maple and elm. 2. conifer leaves are generally thin and needle-like, while seeds are contained in cones. conifers include cedar and pine. 3. evergreens are plants that maintain their leaves in all seasons and include trees such as cedar, elm, and pine. 4. hardwoods reproduce using flowers and have broad leaves; hardwoods include trees such as maple, , and cedar. elm returned you filled in 2 of 10 blanks incorrectly. mango trees are tropical broad leaf plants that maintain their leaves all year long. no credit lost. try again.