A woman is pregnant. Which of her body systems are involved in providing needed nutrients to her unborn child?

Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?

Which is a characteristic of the electron sea model for metallic bonding? molecular orbitals overlap to produce bands. electrons flow easily between metal nuclei. electrons are in fixed positions in the orbitals. atomic nuclei are arranged in an irregular pattern.

An alpha particle is: a hydrogen atom a nucleus of helium two neutrons an electron