What type of soil contains the highest amount of oxygen?

A) sand
B) clay
C) silt
D) gravel


Ans: D) gravel

Biology & Microbiology

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Which group of Arthropods is primarily found in the marine environment?

a. Scorpions b. Planarians c. Arachnids d. Polychaetes e. Crustaceans

Biology & Microbiology

Ovulation is triggered by ____

a. high levels of LH b. low levels of LH c. low levels of estrogen d. high levels of estrogen e. high levels of progesterone

Biology & Microbiology

Territoriality increases aggression

Indicate whether the statement is true or false

Biology & Microbiology

In humans, widow's peak (W) is dominant over straight hairline (w). If a heterozygous male marries a female with a straight hairline, what percent of their children can be expected to have widow's peak?

a) can't be determined b) 25% c) 0% d) 100% e) 50%

Biology & Microbiology