The aerobic threshold is the level of physical effort at which a person's cells are just beginning to carry
out fermentation to meet some of their energy
needs. Marathon runners try to stay at or below
the aerobic threshold so that they can go longer
distances without experiencing difficulty. While
running up and down the hills of San Francisco,
the runner was focused on trying to maintain the
pace he had when he was running on flat land.
What impact did this focus have on his ability to
maintain his aerobic threshold?

PLEASE HELP ITS DUE IN A FEW HOURS I NEED THE ANSWERS ASAP

science-ocean floors and habitats study guide by volleyballqueen3817 a major advance in ocean-floor mapping. list four sections of the ocean floor. algae that use sunlight to produce their own food through photosynthesis. all of the feeding relationships that exist in a habitat. drying out, predators, find food.

answers are:

lysogenic     viral dna merges with host cell dna

lysogenic     no symptoms

lytic               viral dna takes over

lysogenic     virus does not destroy host cell

lytic               virus destroys host cell

lytic               induces symptoms of viral infection

lysogenic       cell reproduces and spreads provirus

the elements of art are the visual tools that the artist uses to create a composition. these are line, shape, color, value, form, texture, and space.

the principles of art and design are balance, contrast, emphasis, movement, pattern, rhythm, and unity/variety.