If ________ is (are) present, secondary succession will occur rapidly

a. herbivores
b. parasites
c. nesting sites
d. improved soil
e. predators


d

Biology & Microbiology

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Before plowing a field, a farmer thought the bare field looked weed-free. Three days after plowing and turning over the soil, he was amazed to see thousands of tiny seedlings. What is the most likely reason for the mass germination of seeds?

A) large seeds that needed soil disturbance to germinate B) small seeds that need light to germinate C) small seeds that were scarified by exposure to plow D) large seeds that needed exposure to higher levels of oxygen to germinate

Biology & Microbiology

At what step in meiosis do the daughter cells become haploid?

A. metaphase 2 B. anaphase 1 C. anaphase 2 D. prophase 2

Biology & Microbiology

Amino acids are characterized by ____

a. an amino group and a hydrogen bond b. a carboxyl group and a hydrogen bond c. two R groups d. an amino group, a carboxyl group, and an R group e. an amino group and a hydrochloric group

Biology & Microbiology

Are all species introductions the fault of humans? What will be an ideal response?

Biology & Microbiology