; and (B) recommendations with respect to ensuring the activities described in paragraph (4) continue after the grant period funding such activities expires. (6) Authorization of appropriations There are authorized to be appropriated such sums as may be necessary to carry out this subsection for fiscal years 2021 through 2023. (c) Definitions In this section: (1) Eligible entity The term eligible entity includes public entities, private community entities, community-based organizations, Indian tribes and tribal organizations (as such terms are defined in section 4 of the Indian Self-Determination and Education Assistance Act ( 25 U.S.C. 5304 )), and urban Indian organizations (as such term is defined in section 4 of the Indian Health Care Improvement Act ( 25 U.S.C. 1603 )). (2) Secretary The term Secretary means the Secretary of Agriculture. 7. Environmental study through National Academies (a) In general The Administrator of the Environmental Protection Agency shall seek to enter an agreement, not later than 60 days after the date of enactment of this Act, with the National Academies of Sciences, Engineering, and Medicine (referred to in this section as the National Academies ) under which the National Academies agree to conduct a study on the impacts of water and air quality, exposure to extreme temperatures, and pollution levels on maternal and infant health outcomes. (b) Study requirements The agreement under subsection (a) shall direct the National Academies to make recommendations for— (1) improving environmental conditions to improve maternal and infant health outcomes