The decayed organic matter in in soil is called . A)
humus
B)
soil tilth
C)
silt
D)
lahar
E)
DDT

Suppose you have monohybrid pea plants in your garden and find that they produce round seed to wrinkled seeds in the ratio of 3: 1. if the allele are designated (r & r) receptively. what is the probable genotypes of the round seeds which produced f 1 ? rr & rr rr only rr & rr rr only rr only

Describe characteristics of a good respitory surface

Which structure in the cardiovascular system connect arteries to veins?