The body’s first line of defence
The body’s first line of defence
Nov 2, 2010
sciencelearn.org.nz
What is First Line of defence in immune system? Physical, Chemical & Biological barriers
What is First Line of defence in immune system? Physical, Chemi…
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biologyexams4u.com
The body’s second line of defence
The body’s second line of defence
Nov 8, 2010
sciencelearn.org.nz
Keep pests out ❌🙅‍♀️… Do you use netting to keep pests away? Physical barriers are so effective in minimizing pest damage. They are also deterrents for large pests like raccoons or even squirrels. If they really want to they will get in but having a first line defence in place really does help. Once you plant up a feast for these buggies and critters they will want to come dine in your garden. I had raccoons in my raised beds last year until I finally put up my netting. After that they never ca
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