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hram777 [196]
3 years ago
6

What are some factors that can decline in human population?

Biology
1 answer:
irinina [24]3 years ago
4 0
1. oxygen
2. diseases
3. food posion
4. pollution ( in the water )
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4. Extend your thinking: Compare the circumference values to the diameters. About how many
Arlecino [84]

Answer:

Relationship Between Diameter and Circumference

If you know a circle's diameter, you can calculate its circumference with this equation: Circumference = diameter times pi (3.14).

5 0
2 years ago
Genetic engineering is the manipulation of genes using cloning and transformation to change the gene structure. Genetic engineer
Leno4ka [110]
There are many known positive outcomes of genetic engineering both in plant and animals. Among these outcomes include: a. elimination of diseases; b. most desirable traits guaranteed to exist; c. crops that can be pest and disease resistant; d. longer shelf life for plants.
8 0
3 years ago
Read 2 more answers
Which features do most stratovolcanoes and cinder cone volcanoes have in common?
Sergeu [11.5K]

Answer:

Option (2)

Explanation:

Strato-volcanoes are the steep, conical shaped, formed by the alternative beds of ash and lava. The magma in this type of volcano contains high silica content and are comprised of bubbles. When the gases are released from these bubbles, then a greater force is exerted from the bottom towards the surface. Due to this, they are very explosive and ejects a huge amount of materials during eruption. For example, Mount St. Helens .

Cinder cones are the simplest volcanoes with steep sides. They are made of the materials and semi solidified lava that are ejected from the vents of the volcano. Eruptions are often explosive due to the force exerted by the gas and the molten lava and are accumulated near the vent. For example, Paricutin.

<u>These two types of volcanoes are similar in terms of its eruption that is violent and explosive in nature. In addition to that, they both have steep sides. </u>

Hence, the correct answer is option (2).

5 0
2 years ago
Read 2 more answers
(b) Identify the dependent variable in the experiments. Identify a control group missing from the second experiment. Justify the
hammer [34]

Hello. You have not submitted the experiments to which this question refers, which makes it impossible for it to be answered. However, I will try to help you in the best possible way.

A dependent variable is one that is influenced by an element, in order to present a result, that is, it is a variable that does not establish itself, being dependent on another variable to establish itself. An example of a dependent variable can be seen in an experiment that seeks to determine the differences in growth rates of bean plants that were fertilized with different organic fertilizers. As you can see, this is an experiment where the different organic fertilizers influence differences in the growth rate of bean plants. Thus, the growth of these plants depends on the fertilizer, this growth being the variable dependent on the experiment.

A control group, in turn, is an element of the experiment that does not receive the element that is being tested in the same experiment. The control group is important, because it allows the researcher to see the results of a system where the tested element does not exist, thus being able to determine the real differences that the tested element is capable of causing. Using the same example presented in the paragraph above, we can see that the different organic fertilizers are the elements tested in the experiment. These fertilizers will be applied to the plants, however it is important that at least one of these plants does not receive any fertilizer, so that the difference between a system with fertilizer and a system without fertilizer can be evaluated. This plant that received no fertilizer is the control group.

4 0
2 years ago
Cows cannot produce their own food. Cows are
kenny6666 [7]

Explanation:

As we know cows are dependent on plants so plants are the producers and cow which consume the produced food are known as consumers.

Plant--->Cow---->Lion----->Fungus (food chain)

Plant:- producer

Cow:-primary consumer

Lion:- secondary consumer

Fungus :- decomposers

5 0
2 years ago
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