por qué un corazón de cuatro cavidades es más eficiente que uno de dos cavidades para suministrar sangre oxigenada a las diversas partes del cuerpo. ¿Qué cambios evolutivos en el modo de vida de los organismos promovieron la evolución del corazón de cuatro cavidades?.

littering streams           is the answer

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1. loamy sand is about 80% sand with 10% clay and defined mostly by sand particles with some clay to provide structure and fertility. the sand particles are easily visible and the soil holds structure but breaks apart easily.

2. scott sand can improve his soil quality by incorporating more silt and organic matter into the soil. peat moss and organic matter can also be incorporated.

ans.

gregor john mendel is known for study of inheritance in pea plants. he used garden pea plant for his study, having alternative traits for various characters. he performed cross-breeding in pea plants to check how characters are transmitted between parents to offspring, such as cross between pure tall and pure dwarf plant. mendel studied the inheritance patterns in pea plants for various generations.

thus, the correct answer includes options and f).