Scientists hypothesize that there are no dinosaurs alive today because

2 answers:

8 0

Its c after the meteorite hit earth it created a different environment worldwide that animals weren't able to adapt to due to its harsh conditions

Lemur [1.5K]3 years ago

8 0

Answer: C

Explanation:

There are several hypotheses as to why Earth's climate changed: an ice age and a meteor collision are two. Regardless of why the climate changed, dinosaurs could not adapt to a new environment to avoid extinction. Mammals did not become a dominant species on Earth until the extinction of dinosaurs

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How many significant figures are in 50.5?

Art [367]

3 as a single number is considered a sf

7 0

3 years ago

An island reports that in the year 2000 there were 240 babies born. That same year, 100 individuals died.

lyudmila [28]

Answer:

+ 140

Explanation:

You can show the natural growth rate by subtracting the death rate from the birth rate during one year and converting this into a percentage.

Here it would be:

240 - 100 = + 140

// if you want to convert it to percentage, you need to know the size of the population

it would be

140 / (population size) * 100 %

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3 years ago

Name the physical quantity which changes contenously during uniform-circular motion.

kumpel [21]

The direction of the motion is constantly changing during
motion over any closed path, not only circular.

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3 years ago

Assume that you have a rectangular tank with its top at ground level. The length and width of the top are 14 feet and 7 feet, re

ch4aika [34]

To solve this problem we will use the work theorem, for which we have that the Force applied on the object multiplied by the distance traveled by it, is equivalent to the total work. From the measurements obtained we have that the width and the top are 14ft and 7ft respectively. In turn, the bottom of the tank is 15ft. Although the weight of the liquid is not given we will assume this value of $62 lb / ft ^ 3$ (Whose variable will remain modifiable until the end of the equations subsequently presented to facilitate the change of this, in case be different). Now the general expression for the integral of work would be given as

$W = \gamma A * \int_0^15 dy$

Basically under this expression we are making it difficult for the weight of the liquid multiplied by the area (Top and widht) under the integral of the liquid path to be equivalent to the total work done, then replacing

$W = (62)(14*7)\int^{15}_0 (15-y)dy$