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stealth61 [152]
3 years ago
14

Can someone give me the number of deadly spiders in the united states

Biology
1 answer:
jarptica [38.1K]3 years ago
8 0

Answer: 3

Explanation:

The black widow, the hobo spider, and the brown recluse spider are all poisonous. They all have lethal venom.

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What does it mean when they say genetic.
olya-2409 [2.1K]

Answer:

relating to or determined by the origin, development, or causal antecedents of something

Explanation:

3 0
2 years ago
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the deeper we go in the ground , the older things get . you agree with this statment explain your answer​
strojnjashka [21]

Answer:

True

Explanation:

It is correct to say that the deeper in the ground we go, the older things get. This statement is specifically valid in a terrain that has not been disturbed by tectonic activities.

<em>According to the law of superposition of strata "in a sequence of sediment, the oldest layer is usually at the bottom and the youngest is on top provided the area is undisturbed". </em>

Based on this law of superposition of strata, it clearly seen that the deeper we go down in the earth, the older things get.

8 0
2 years ago
In a well-balanced ecosystem, squirrels eat nuts, raccoons feed on squirrels, and bears feed on raccoons. It was observed that t
BlackZzzverrR [31]
Trophic levels go by, 
Producer (The nuts)
Primary Consumer (Squirrels)
Secondary Consumer (Raccoons)
Tertiary Consumer (Bear)


So squirrels would be at a lower trophic level.
 Hope his help :)

7 0
3 years ago
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A population of 1,000 healthy, at risk people is monitored for one year starting on January 1st, and the development of cases of
masha68 [24]

Answer:

\mathbf{cummulative \ incidence = \dfrac{60}{1000}}

Explanation:

We recognize that total occurrence equals new cases of disease over time divided by the number of people at risk at the onset.

Mathematically:

\mathbf{cummulative \ incidence = \dfrac{New \ cases \ of \ disease \ occurrence}{Number  \ of \ population \ at \ risk \ at \ onset}}

Given that:

Number of the population at risk = 1000 individuals

New cases during Jan 1 - Dec 31 = 60 because;

At 20 occurred on June 30 & 40 on Sept. 30) & no new cases were identified after that:

∴

\mathbf{cummulative \ incidence = \dfrac{60}{1000}}

3 0
2 years ago
What are seaweeds?<br> algae<br> slime molds<br> diatoms<br> amoeba
Ahat [919]

Seaweed is a type of algae.

Explanation: Seaweeds are a group of photoautotrophic, multi-cellular algae occurring in marine environments.

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2 years ago
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