The Most Common Cause of Vaginal Bleeding in the First

question 4

Multiple Choice

The most common cause of vaginal bleeding in the first trimester is which one of the following?

• A) Placenta previa
• B) Subchorionic hemorrhage
• C) Ectopic pregnancy
• D) Missed abortion

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Definitions:

Biological Control Agent

An organism, such as a predator, parasite, or pathogen, intentionally released to control a pest species, reducing its population in a natural or managed ecosystem.

Target

An object, individual, or location selected as the aim of an attack or the focus of an activity or project.

Host Species

A species that provides a source of energy or a suitable environment for a pathogen or parasite to live and reproduce.

Equilibrium Model

A conceptual model that describes a state where dynamic processes, within an ecosystem or economy, balance over time.