Humans depend on ecosystems for ecosystem services and
resources. For example, this river ecosystem provides water, fish,
and a place to swim. The forest ecosystem provides wood, shade,
and erosion control. Choose a resource and describe the possible
effects of its use on society and on ecosystems throughout its life
cycle.
Answers: 2
Biology, 22.06.2019 02:40
How are the testes and ovaries similar? a. both produce sex cells. b. both connect internal reproductive organs to the exterior. c. both transport sex cells from their site of production. d. both store mature sex cells.
Answers: 1
Biology, 22.06.2019 20:10
18. determine whether each stateme blank space given. ach statement is true (t) or false (f). place your answer in the 8. when a cell is put into an isotonic solution, individual wat put into an isotonic solution, individual water molecules cannot move back and forth across the cell membrane. d. when a cell is put into a hypertonic solution, there is a net movement of water molecules across the cell membrane into the cell. c. when a cell is put into a hypotonic solution, there is a net movement of water molecules across the cell membrane out of the cell. d. the movement of any solvent across a semi-permeable membrane is called osmosis. e. carrier proteins have the ability to change shape and physically move molecules across the cell membrane. f. in facilitated diffusion, the concentration of the molecules to be moved across the cell membrane is higher inside the cell.
Answers: 2
Biology, 23.06.2019 00:30
Many birth-control pills release a constant amount of synthetic estradiols and progesterone for 21 days, followed by 7 days when no hormones are ingested. which of the following statements most accurately describes the effects of birth-control pills? -birth-control pills maintain constant levels of estrogens and/or progesterone so there is no surge in lh and ovulation does not occur.-birth-control pills inhibit the development of the uterine lining so implantation of a fertilized oocyte cannot occur.-birth-control pills maintain constant levels of estrogens and/or progesterones and mask the release of the oocyte from the follicle.-the 7 days with no hormones does not allow a thick enough uterine lining to form so a fertilized oocyte cannot implant.
Answers: 2
Humans depend on ecosystems for ecosystem services and
resources. For example, this river ecosystem...
Mathematics, 12.11.2019 14:31
Spanish, 12.11.2019 14:31
Mathematics, 12.11.2019 14:31
English, 12.11.2019 14:31
Geography, 12.11.2019 14:31
Advanced Placement (AP), 12.11.2019 14:31
Mathematics, 12.11.2019 14:31
History, 12.11.2019 14:31