How many natural elements exist on Earth?

a. 100
b. 112
c. 88
d. 96
e. 110


D

Biology & Microbiology

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Ecotypes are variants within a species that are adapted to local environmental conditions

Indicate whether the statement is true or false

Biology & Microbiology

An experimental condition applied to research subjects is called a

a) treatment b) control c) randomization d) placebo e) variable

Biology & Microbiology

The importance of fungi to ecosystems is mostly as a(n)

A) producer. B) decomposer. C) parasite. D) symbiote. E) predator.

Biology & Microbiology

A research project you are doing looks at different protein-encoding genes in the human genome. What are some of the main classes of genes that you will find? (Select all that apply.)A) clusters of two or more distinct genes known as multigene familiesB) transposons that move within or between chromosomesC) single-copy genes that exist once on the genomeD) simple sequence repeatsE) tandem clusters used to increase levels of specific mRNAs

What will be an ideal response?

Biology & Microbiology