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3 years ago

What problems would upu expect to observe in an ecosystem without secondary consumers

1 answer:

6 0

If secondary consumers are removed from the ecosystem, an ecological imbalance may be created. Secondary consumers are generally feed on other animals (primary consumers) Thus, on removing secondary consumers from food chain, there will be increase in population of primary consumers as a result all the grass and other vegetation will be eaten by the primary consumers. This will leads to desertification and eventually all the top consumers will also eliminated from the ecosystem.

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What situation is an example of artifical selection

ss7ja [257]

<u>Answer:</u>

An example situation of artificial selection is "More African elephants today naturally lack tusks compared to the elephant populations 100 years ago, because big game hunters sought elephants for ivory".

<u>Explanation:</u>

The process of breeding animals to acquire the desired characteristics by the external means other than natural selection and behavior of animal itself is called as artificial selection.

The first artificial selection was carried out by Darwin when he mated penguins that would have a higher chance of breeding.

The practice of artificial selection was existing in human civilization a long time ago.

This process was used to use wild animals and domestic animals in battles and other household works.

3 0

3 years ago

What is the main reason that governments create natural areas called reserves?

RSB [31]

I believe it is D, to protect weakened ecosystems and their wildlife

8 0

3 years ago

Read 2 more answers

A. Secretes hormones

Vadim26 [7]

Answer:

A. 3

B. 4

C. 5

D. 6

E. 2

F. 1

Explanation:

1. Integumentary system.

This is an organ system that consists of hair, skin, nails and exocrine glands with receptors that senses the outer stimulus and environmental conditions, through homeostasis maintain stability of the internal environment.

2. Nervous system.

It receives sensory information and signals, convert them to nerve impulses that are transmitted to the body and brain via the spinal cord using nuerons and axons. It also intergrates, retains and analyses information in the brain.

3.Endocrine system.

Secretes hormones and chemicals in response to stimulus from the nervous system to maintain balance using feedback loops i.e, negative and positive.

4. Lymphatic system.

Part of the immune system that consist of vessels that carries lymph, cleaning the blood by filtering lymph with foreign particles into the lymph node.

5. Urinary system.

Used to eliminate waste from the body, regulates blood pressure, volume and pH. It also used to retain electrolytes and metabolites.

6. Respiratory system.

Used for gaseous exchange using the blood, heart and lungs. Air enters the lungs, transported by blood and is pumped by the heart to all body parts where oxygen is dropped, carbon dioxide is collected by the veins to the lungs and released to the atmosphere.

8 0

3 years ago

Explain how chloroplasts and mitochondria work together in a plant cell.

podryga [215]

Chloroplasts is to conduct photosynthesis mitochondria is mostly the energy

7 0

3 years ago

Read 2 more answers

1. Which of the following statements about proteins is incorrect?

velikii [3]

Answer: Option A.

Explanation: The correct answer to the question is option A, because not all proteins are made up of some combination of 20 essential amino acids.

3 0

3 years ago