BIOLOGY MIDDLE SCHOOL

All eukaryotic cells contain small bodies called _________.

Answers

Answer 1
Answer:

Heya

Here is your answer

________________

All Eukaryotic cells contain small bodies known as Centrioles


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What is the half-life of strontium-90? please explain your answer!

Answers

The right answer is 28 years.

The half-life, or period of a radioactive isotope, is the time required for half of the nuclei of this isotope initially present to decay naturally.

One gram of pure 90 strontium has a radioactivity of 5.11 TBq. Its beta radiation is not penetrating, which makes it difficult to measure when it is in the soil or a matrix. It is very harmful when the particle is inhaled or ingested.
28 years.

The half life is exactly what it means. We want to know how many years it takes for the Strontium-90 to go from 100% to 50% to 25% etc

What happens when species overproduce offspring

Answers

The food runs out and the species usually ends up running out of food, but can sometimes spread to farther places if they are habitable. Then, that plant is endangered or extinct in that area. That is why overpopulation is taken so seriously. They can damage so many things. Then, the predators will have nothing to eat in that environment and will end up dying and the other animals that eat that plant will end up dying, and so on. Very sad! :(

Thanks for the opportunity to answer your question and I hope this helped! :)

Final answer:

When species overproduce offspring, it can lead to competition for resources and negative impacts on the environment and survival rates.

Explanation:

When species overproduce offspring, it can lead to competition for resources such as food, water, and shelter. This competition can result in a decrease in the overall fitness and survival rates of the offspring. Additionally, overpopulation can put pressure on the environment and lead to negative impacts such as habitat destruction and increased spread of diseases.

Learn more about overproduction of offspring here:

brainly.com/question/31811403

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A student designs an experiment to determine the effect of sunlight on plant growth. He or she places three identical plants on three different window sills, which permit different amounts of sunlight exposure. Each plant receives the same amount of water each day. What is the responding variable in this experiment? A.plant growth B.amount of sunlight
C.amount of water
D.type of plant

Answers

The responding variable in this experiment of the students experiment where she places three identical plants on three different window sills which were expose to different amounts of sunlight exposure and same amount of water each day is the amount of sunlight because even the plant receives the same amount of water but each of them didn't expose the same amount of sunlight than the growth of the plant will not be the same.

Answer:

so it d

Explanation:

A small number of finches live in a protected bird area. They are given asmuch food as they need and have plenty of space. Why would natural
selection not occur in this population?
O
A. There is no diversity in the population,
O
B. The population is above carrying capacity.
O
C. There are enough resources for the birds.
O
D. There is nothing to cause genetic mutations.

Answers

The natural selection would not occur in this population because : ( C ) There are enough resources for the birds.

What is Natural selection

Natural selection is a process whereby populations of organisms living in an environment adapt and change due to selective reproduction of genes in its genotype. Natural selection is triggered by certain environmental factors. In the scenerio protrayed in the question there is an abundance of resources for the birds therefore natural selection will not occur.

Hence we can conclude that there are anough resources for the birds

Learn more about Natural selection : brainly.com/question/1144962

Answer:

C. There are enough resources for the birds.

Explanation:

The leopard frog and the pickerel frog are twoclosely related species. In areas where
their ranges overlap, the frogs will remain
separate species if they

Answers

Answer:

They will remain separate species if they don't breed.

Explanation:

Sense we have now found the gene that controls nitrogen uptake, do you think it would be a good idea to genetically modify crop plants to grow with less nitrogen? Why or why not?

Answers

It might not be a good idea as nitrogen may be needed by plants in several cellular processes and eliminating nitrogen uptake might severely impair these functions if there are no alternatives to these pathways
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