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ollegr [7]
3 years ago
14

How long ago did homo sapiens appear

Biology
1 answer:
GuDViN [60]3 years ago
4 0
About from <span>1.8 to 1.3 million years ago,</span>
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Jason has five equally massed lead fishing weights, each weighing 250 grams. What is the total mass of the five lead fishing wei
algol [13]

Answer:

1250 g=1.25 Kg

Explanation:

We are given that Jason has five fishes of equally massed lead fish weights.

Weigh of each fish =250 grams

We have to find the value of total mass of the five lead fishing weights

Total number of fishes=5

In order to find the total mass we will use unitary method

Total mass is obtained by multiplying the total number of fishes with weight of one fish

Total mass=5\times 250

Total mass of five fishes=1250 g

1 kg =1000g

Then 1250 g=\frac{1250}{1000}=1.25 Kg

Hence, total mass of five lead fishing weights=1250 g=1.25 Kg

3 0
3 years ago
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African cichlids are a group of closely related fish species. There are at least 500 known species living in three small lakes.
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The correct answer that would best complete the given statement above would be the term ADAPTIVE RADIATION. African cichlids are a group of closely related fish species. There are at least 500 known species living in three small lakes. Over time, specialized teeth and body colorations have evolved for each species in response to mutations and competition for food and mates. This change over time is an example of ADAPTIVE RADIATION. Adaptive radiation by definition, is <span>the diversification of a group of organisms into forms filling different ecological niches.</span>
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3 years ago
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What is the name of the phylum where starfish are found? Why is this an appropriate name for the phylum?
Assoli18 [71]

Answer:

Starfish are also referred to as sea stars because of their star-shaped appearance. They are a part of the phylum Echinodermata and are related to sand dollars, sea urchins, and sea cucumbers.

Explanation:

3 0
2 years ago
In the case study of the Amboseli National Reserve, scientists were trying to determine a cause for the loss of woodland habitat
Daniel [21]
The appropriate answer is a. clearing of land by farmers. The economy of Tanzania is largely agrarian and much of the population lives below the poverty line. This fact has made the use of fuel wood the primary source of energy for people living in and around the region. This coupled with the increased cultivation of cash crops has lead to environmental degradation in the area. 
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3 years ago
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Which provides most of the energy in ecosystems? Choose the correct answer.
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Answer:

Producers.

Explanation:

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