Lichens take up nutrients and pollutants from airborne dust, so many cannot survive where the level of air pollution is high. The U.S. Forest Service monitors lichens on tree trunks as part of its program to assess the health of forest communities. Lichen is a(n) ____

a. pioneer species
b. indicator species
c. primary succession species
d. keystone species
e. exotic species


b

Biology & Microbiology

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In phloem, bulk flow occurs from regions of high to low ________ concentration.

A. solute B. mineral C. water D. cytosol E. cytoplasm

Biology & Microbiology

________ was the first organism to have its entire genome sequenced.

A) The fruit fly B) E. coli C) Haemophilus influenzae D) Mycoplasma genitalium

Biology & Microbiology

A woman with blood type B has a baby with blood type O. A man she says is the baby's father has blood type A, but he denies having fathered the child. Could he be the father?

What will be an ideal response?

Biology & Microbiology

Lyme disease is vectored by ticks.

Answer the following statement true (T) or false (F)

Biology & Microbiology