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Nat2105 [25]
3 years ago
15

1. What percentage of the weight of Earth's crust is made of silicon?

Biology
1 answer:
sladkih [1.3K]3 years ago
7 0

Answer: 27.7 percent

Explanation:

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You observe two populations of chimpanzees using sticks to dig termites out from nests for food. One population uses long sticks
icang [17]

Answer: B. The population using long sticks has mostly long sticks in its environment

Explanation:

Going back to the statement that reiterates the hypothesis after observations about the apes in the Introduction.

Reviewing the findings in this case, on the behavior of using sticks to dig seem to be the focus the experiment and choice length of the stick.

Making a judgment about whether or not the two finding has been supported is next step.

If there are equal numbers of short and long sticks in the environment of each population and the apes chooses one specific we can say their behavior is learned.

 If the chimpanzees using short sticks have made the the sticks short by breaking long sticks then we can say this behavior is learned.

When the Young chimpanzees in both populations start out using sticks of many different sizes we can see that these variables of learning is yet to be perfected.

When individuals in the population that don’t use the common stick length for that population catch fewer termites this reveals a randomness in the behavior of interest.

At this point we can say that if the population using long sticks has mostly long sticks in its environment then there is a biased objective in the study and this does not support the hypothesis that the choice of stick length is a learned behavior.

3 0
3 years ago
Which best explains how the body mantens homeostats)
jek_recluse [69]

Answer:

All systems work together to stabilize the body.

Explanation:

Certain systems work with each other in order to maintain homeostasis, which is essential for the body. For example, when blood circulates through the digestive system, it picks up nutrients absorbed by the body during its last meal. Additionally, blood carries oxygen taken in by the lungs. The circulatory system works with the respiratory system here to distribute oxygen to other parts of the body.

6 0
3 years ago
WILL MARK BRAINLIEST
nevsk [136]

Answer:

1. Evolution

2. Natural selection

Explanation:

5 0
3 years ago
How is covalent bonding important to human beings?
Vesnalui [34]

Answer: They are found in proteins and DNA.

Explanation:

Covalent bonding is important to human beings because they are commonly found in carbon-based organic molecules which are considering proteins and DNA which are found in the human body.

There are three types of chemical bonds that are very important in the human body and physiology

8 0
3 years ago
Which of these statements MUST be true if two different plants are members of the same species?
vodomira [7]

As it is given in the question that both the plant belongs to same species and according to biological species concept, a species can be defined as the largest group of organisms in which any two two individuals of the opposite sex breed to produce a fertile offspring.

According to this the correct answer is D) They can produce offspring plants that also produce fertile seed.  


4 0
3 years ago
Read 2 more answers
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