SPA SCIENCE CHEMISTRY MP3 2020-21 / 1 of 16 ¿Qué afirmación es verdadera para la reacción representada por esta ecuación?
CH4 + 202 - CO2 + 2H2O
O A. 1 gramo de CH4 es necesario para reaccionar con 2 gramos de O2
OB. 1 gramo de CH4 es necesario para reaccionar con 4 gramos de O2
O C. 1 mol de CH4 es necesario para reaccionar con 2 moles de O2
O D. 1 mol de CH4 es necesario para reaccionar con 4 moles de O2

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.

What are the fixed alleles in the human species? o a. the alleles that are on the most chromosomes b. the alleles that change most often 000 c. the alleles that no one has d. the alleles that everyone has

Directions: read the descriptions of the four islands presented in the lesson. 1. list two new traits that each new species of rat might demonstrate as it adapts to the conditions on each island. 2. introduce one of the four new rat species to another island and describe one challenge it would encounter and one success as it adapts to its new environment.