Pl help me in a cross-section of soil, what does a horizontal consist of

a) clay, minerals, and little humus

b) humus only

c) partly weathered rocks

d) topsoil

Use this diagram of an animal cell to answer the question. where does the first stage of cellular respiration occur? w x y z

Flock x flock y flock z total pieces of food eaten (from previous page) 147 93 60 food percentage* % % % simulated number of birds in flock for 3rd generation** * divide each flock's total pieces of food by 300, the total number of pieces of food eaten. ** multiply the food percentage for each flock by the total number of birds (30).

Which kingdom includes some organisms that have no nucleus and can live in an environment with an extremely high salt content