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ICE Princess25 [194]
3 years ago
7

Describe how you can avoid spreading invasive plant species.

Medicine
2 answers:
Firlakuza [10]3 years ago
7 0

Answer:

There are three main ways of avoiding the spreading of an invasive plant species via manual control. Manual control techniques include activities such as hand-pulling, digging, flooding, mulching, burning, removal of alternate hosts and manual destruction or removal of nests, egg masses or other life stages. These techniques work best on small populations or in areas where chemicals or motorized equipment cannot be used. Manual control efforts must be persistent and several treatments may be needed to reduce or eliminate the target population. If infestations are too pervasive, manual control may become labor intensive and thus not economically feasible. Digging/Hand-pulling: Remove entire root to prevent resprouting. Usually works best with small or young plants, in sandy or loose soils, or when soils are damp. Smothering: Use mulch, black plastic, carpet, or any other impenetrable barrier to cover target plants for at least one growing season. The effectiveness of this technique can be increased by first cutting the target plants and then smothering them. If dealing with a species that produces clones, be sure to cover all stems of the species. Flooding: This is only feasible where water levels can be manipulated to completely cover cut plants for a period of time. The depth of water necessary and the amount of time cut plants should be covered will vary from species to species.

Nadusha1986 [10]3 years ago
3 0

Answer:

You must include

Explanation:

Brush or pick seeds off your clothes.

Put seeds you find at home in the trash.

Clean your pets (coat and feet) to remove seeds and plant parts.

Stay on trails when hiking.

Check boats, trailers, shoes, bikes, and people for plant seeds or plant parts.  

Use firewood in the same place you find it to avoid transferring seeds.

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A. Rational.

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Any help on 16&17 pl
egoroff_w [7]
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3 0
3 years ago
In the experiments conducted by Avery, McCarty, and MacLeod, which hypothetical result would indicate that protein, not nucleic
Jobisdone [24]

Answer:

Only the extracts from heat-killed cells treated with RNase are unable to transform nonvirulent bacteria into virulent bacteria.

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The purified cells did not give positive results in the tests done by the scientists, but they presented transformants very similar to the DNA. However, Avery suspected that the result should be reinterpreted and that the molecule was not a DNA. This is because RNA degrading enzymes had no effect on the transforming principle and only RNase-treated heat-killed cell extracts are unable to transform non-virulent bacteria into virulent bacteria.

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