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Step2247 [10]
2 years ago
11

The current human population growth rate is 1.12% per year. At this rate, how many years will it take for our population to doub

le in size?
Biology
1 answer:
NeTakaya2 years ago
6 0

Answer:

62.5

Explanation:

The solution for doubling time is 70/(current % growth rate)  

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Students conducted an investigation which required them to record daily the height in millimeters of several plants. Which tool
bonufazy [111]
<span>C. metric ruler since millimeters are metric</span>
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3 years ago
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A 154-lb adult man performs a moderate level of physical activity and regularly consumes 2700 Calories a day. State whether the
Arte-miy333 [17]

Answer:

The correct answer would be - remain the same.

Explanation:

In the given table showing the average daily calories requirement according to the weight of the adult men. Which is as follows:

weight                daily intake

132                        2250

154                        2450

176                        2650

198                        2850

220                       3050

242                       3250

In this, the highlight weight and required calories should be taken by the man who does not perform any physical exercise but according to the question a man with 154 lb perform a moderate exercise, and according to the CDC a 154 lb men can burn anywhere between 140 and 295 calories in 30 minutes by moderate exercise for an hour.

Thus, the total calories he takes: 2700

burn by exercise: 295

should take: 2450

then = 2700 - (2450+295)

= 50 calories over the limit that will have negligible effect on the weight.

6 0
3 years ago
One of the roles of ecological succession is to allow species with different adaptations to interact. Ecological succession occu
KIM [24]

Answer:

D overlap for a variety of species.

Explanation:

During ecological succession, a sequence of changes occurs in a community at a temporal and spatial level. Local colonizations and extinctions occur while ecosystems evolve at a more complex level.  

Ecological succession occurs in <u>stages</u>. The first stages are represented by communities of simple trophic levels and few species. With time, as the communities go through different stages, they transform into more complex ecosystems, that are much richer in diversity, and showing more interaction among the different species that compose it.  The final stage is known as the climax and represents a mature and stable system.

While the community is going through these changes, many species get extinct while many others get to emerge and survive. It occurs overlapping of different taxonomic groups that interact with each other competing or beneficiating other groups.  

3 0
3 years ago
identify an independent variable in the experiment graphed in figure 1. based on the data in figure 1, identify a control that s
choli [55]

Answer:

Explanation:

This question is incomplete because of the absence of the graph. However, the independent variable of an experiment is the variable that is not affected by any other variable during the course of the experiment but is however intentionally or unintentionally predetermined by the researcher conducting the experiment. For example, in an experiment to determine the effect of age on blood pressure; age is the independent variable because the age class/groups of the individuals to be used can be determined by the researcher also the age cannot be affected by the pressure (the age of a person cannot change because of an increase/decrease in blood pressure).

Also, the control of an experiment is the variable/data in which other data in the same experiment are compared to. For example, in an experiment to determine the effect of a substance (such as sepin-1) on the growth of cancer cells (using a culture medium), the control can be the culture medium that was not given any substance or the culture medium that was given a pure substance of no effect like water. This means, in this control culture medium, the cancer cells will continue to grow normally while that growth will be compared with what is seen in the culture medium treated with sepin-1.

7 0
3 years ago
What of the following happens first?
romanna [79]

Answer:

The correct answer is option d

Explanation:

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3 years ago
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