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2 years ago

Why zooplankton is essential to life on the planet

Biology

1 answer:

son4ous [18]2 years ago

7 0

Answer:

zooplankton feed on phytoplankton, the main producers of the ocean, that provide a strong link for every marine food chain. without these consumers, there would be very little methods for energy to be distributed through the oceans ecosystem and life would diminish within the ocean.

Explanation:

You might be interested in

ipn [44]

Answer:

Plant Reproduction and Life Cycle. The life cycle of a plant is very different from the life cycle of an animal. Humans are made entirely of diploid cells (cells with two sets of chromosomes, referred to as ''2n''). ... Plants, however, can live when they are at the stage of having haploid cells or diploid cells.

Explanation:

In an animal life cycle, male and female parents each create sex cells (sperm and eggs) that unite to form a fertilized egg and develop into an offspring organism. Plants, likewise, have sperm and eggs in their life cycles, but these are produced by an intermediate stage between the adult and the offspring.

7 0

3 years ago

Read 2 more answers

If an atom has 15 electrons, how many electrons are in the n=1 energy level?

IRISSAK [1]

Answer:

In the n=1 energy level, the atom has 2 electrons

Explanation:

Electrons orbit the nucleus of an atom in multiple rings (energy levels). The first ring of the electron can only hold 2 electrons. After that, electrons are added to the second ring. Excluding the first ring, all other rings can hold a maximum of 8 electrons.

For example, Oxygen is an atom with 6 electrons. The first energy level contains 2 electrons, and the second energy level contains 4 electrons. The second energy level has room for up to 4 more electrons.

In your example of an atom with 15 electrons, there would be 2 electrons in the first ring, 8 electrons in the second ring, and 5 electrons in the third and final ring.

To summarize, all atoms have a first energy level containing 2 electrons, and all other energy levels can contain 8 electrons. This is true no matter the number of electrons.

7 0

2 years ago

Choose the true statement(s) about mutations. To be marked correct, you'll need to select all true statements, as there may be m

Kazeer [188]

Answer

All four options ( A,B,C,D ) are true about mutations.

Explanation:

A- Mutation can provide an evolutionary benefits

As mutation helps in creating DNA sequence ,new allele(variant of gene) for a specific gene , thus mutations is known to be the first step of evolution.

B- Mutation leads to genetic and phenotypic variation within the species.

In mutation, genetic variation (difference between individual/population) takes place as new alleles are created ,random matings ,fertilization and during meiosis , recombination of homologous chromosomes. One of the type of mutation called gene mutation give rise to genetic variations.

Its an exceptional case of phenotypic variations ,as mostly there is no effect of mutation on phenotypic variation. Very few mutations lead to phenotype variation and in case mutation takes place in phenotype variation ,making the organism well suited to the environment, the a rapid change in the characterstics of the individual species is seen.

C- In humans, the somatic cell mutation are not passed in offsprings.

Somatic cells are present in all over the body except in the cells that give rise to gametes( ie. egg and sperm cells) and produces offsprings . Thus somatic cells are absent in gametic cells ,therefore mutation cannot be passed to human's offsprings or children.

D- Evolution rates are faster in bacteria than in humans because most mutations in human cells are silent.

Due to their fast growth ,bacteria evolve quickly and share genes with each other and even between the species ,also the mutation that are helpful spread faster in bacteria.

In humans, the silent mutation in human cells cause many genetic disorders like Laron dwarfism. About 99.8% genes are silent mutation.

7 0

2 years ago

Five distant planets are made mostly of

Ymorist [56]

Hydrogen and helium

7 0

2 years ago

In the Galapagos Islands, there were many species of tortoises, woodpeckers and other animals. Why were the animals like the tor

choli [55]

Answer:

The animals were different because there were things the animals need to adapt to in the Galapagos that may have changed their appearance. for example a bird may have a different shaped beak because they started to evolve so they could eat foods that were available to them on the island

4 0

3 years ago