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Darina [25.2K]
3 years ago
7

In an ecosystem, each trophic level receives energy from the level below it. What is the

Biology
1 answer:
ipn [44]3 years ago
8 0

Answer:

Explanation: i don't know

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How would you build a model that is ionized? What happens if an atom is too ionized? How would you build a model that is radioac
nekit [7.7K]
When<span> the number </span>of<span> electrons </span>does<span> not equal the number </span>of protons<span>, the </span>atom<span> is</span>ionized<span>. (The </span>atom<span> is then called an ion). ... </span>If<span> your </span>atom is too ionized<span>, it </span>will<span> likely zip away from </span>you<span> and attach itself to a nearby </span>atom<span> or molecule. An </span>atom becomes radioactive when<span> its nucleus contains </span>too<span> many or </span>too<span> few </span>neutrons<span>.</span>
3 0
3 years ago
What three things does something need to have in order to be considered living?
Semmy [17]

Answer:

air water and food

Explanation:

all living things need air, water, and food.

5 0
3 years ago
What types of traits can show genetic variation within a species?​
natta225 [31]

Answer:

Types of variation in genetics

Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring)

other answer

There are three sources of genetic variation: mutation, gene flow, and sexual reproduction. A mutation is simply a change in the DNA. Mutations themselves are not very common and are usually harmful to a population. Because of this, mutations are usually selected against through evolutionary processes

6 0
3 years ago
The tissue(s) that is/are considered excitable because of the ability to generate electrical signals is/are called ________ tiss
REY [17]

Answer:

Muscle tissue and neural tissue

Explanation:

Excitability refers to the ability of muscle and nerve cells of the respective tissues to respond to a stimulus and generate an action potential. Both muscle cells and neurons respond to a stimulus and convert it into the action potential.

Action potential refers to the electrical signal. Propagation of action potential along the membranes of these cells results in muscle contraction and functioning of neurons.

The membrane potential of these cells changes in response to the stimulus and the changed potential is propagated to the other cells.

5 0
3 years ago
What did Darwin conclude about the finches on the Galapagos Islands that later supported his theory of evolution? Check all that
Ahat [919]

Answer:

The finches on Galapagos Islands had different beak

The beaks of the finches changed over time

The Galapagos finches had a common ancestor

Explanation: Darwin's Finches are a good example of natural selection and adaptive radiation of evolution. The different finches in Galapagos Island have emerged from a common  black, seed eating, short beak finches. This is called adaptive radiation, where different species arose from a single ancestor.

Due to changes in the natural environment, food resources, some finches have a long beak. This long beaks help them to eat insects. As a result, the competition will be less and nature selects them to survive in the new environment. This is a natural selection of evolution.

3 0
3 years ago
Read 2 more answers
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