Which of the following spiders can cause a characteristic wound with a bite that is often painless?
a.
brown recluse spider
b.
black widow spider
c.
argiope spider
d.
sheet web spider

A. Brown recluse spider

Explanation:

The brown recluse spiders are 0.5 inches long. These are dark violin shaped wound found on the head and midsection. The bite caused by these spiders includes symptoms like reddened skin, blister, pain and itching. The effect of bite remains for 2 to 8 hours. Usually an open sore ulcer develops due to the breakdown of the tissue or necrosis.

the rocks are classified by the geological process they are formed by. the three main groups of rocks are igneous, metamorphic, and sedimentary. minerals are not they are classified under the chemical classes they are in. these groups include silicates, sulfates and carbonates.

wild parsnip is a perennial plant which reproduces rapidly in areas which have no sign of agricultural activity such roadside or at no tillage open areas. it's considered invasive because it can inhibit the growth of another plant  and its reproduction is fast. there are several harmful effects of this invasive plant although its taproot is edible since it is a member of the carrot family. wild parsnips can cause skin blistering when in contact because of the chemicals it contains, second it inhibits the growth of other plants, it will restrict the growth of animals when eaten and lastly, it drives away natural pollinators like bees.