Which component of soil is largest? a. clay b. humus c. sand d. silt

In the diagram below, the northern hemisphere would be in what season at position a a.fall b. winter c.summer d.spring

What was darwins theory of common decent

2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.