BIOLOGY COLLEGE

7. How does the plant lichen quicken the weathering process? *(1 Punto)
They eat the rocks
They create new bacteria that breaks away rocks
They secrete acid that breaks away rocks
They eat the acid in rocks

Answers

Answer 1
Answer:

Answer:

The correct answer is - They secrete acid that breaks away rocks

Explanation:

Lichen causes chemical weathering to break the rocks quickly which is the excretion of various acids like oxalic acid and many more organic acids that can cause a significant impact on the rock by dissolving minerals.

By breaking the rocks it forms the ground for the plant that will come later in place of the bare rocks by this chemical weathering process. An example of chemical weather is a change of the granite to clay with the help of hydrolysis.

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What are the limitations of the cell theory​

Answers

Answer:

Explanation:

Viruses are a limitation to cell theory.

According to cell theory, all cells arise from pre - existing cells. But viruses lack any membranes and do not show the characteristics of life unless they enter a living body and use its cell machinery to multiply.

Hope this helps

plz mark as brainliest!!!!
Actually this is a copied one.sorry but I think this helps

Draw three water molecules and label any parts or interactions

Answers

Answer:

The roman numerals in blue are the labels I will write below.

Explanation:

i. lone pair of electrons on oxygen atom

ii. covalent bond between oxygen and hydrogen

iii. partial charges that are due to oxygen's high electronegativity. Oxgen will pull the pair of electrons in the covalent bond towards itself and that obtaining a partial negative charge, while hydrogen obtains a partial positive charge.

iv. hydrogen bonds between partially negative oxygen and partially positive hydrogen.

PS. EACH WATER MOLECULE CAN MAKE UP TO 4 HYDROGEN BONDS. ONE WITH EACH HYDROGEN AND TWO FOR EACH ELECTRON LONE PAIR ON OXYGEN. (refer to the middle water molecule in the diagram)

Final answer:

Draw three water molecules and label their parts and interactions, including the hydrogen bond.

Explanation:

  1. Draw three water molecules, each consisting of two hydrogen (H) atoms and one oxygen (O) atom.

  2. Label the parts of each water molecule:

    • The two hydrogen atoms as 'H'.
    • The oxygen atom as 'O'.

  3. Label the interactions between water molecules:

    • The hydrogen bond between the hydrogen atom of one water molecule and the oxygen atom of another water molecule.

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Of the following groups which contains the greatest number of species? crustaceans
mammals
plants
insects

Answers

Answer: Insects

Explanation:

The Arthropoda is the largest phylum in the animal kingdom because about 85 percent of all known species are arthropods, and insects alone make up about 75 percent of known species.

Arthropods are divided into the following classes:

- Crustaceans

- Insects

- Arachnids

- Myriapods

Thus, insects contains the greatest number of species

Answer: Insects.

Explanation:

Insects are largest group of invertebrates animal. They belong to phylum arthropoda and the are about 1 million or more. Insects have a pair of antenna, their body is cover with exoskeleton, they have three pairs of leg, their body is divided Into head , thorax and abdomen. Their eyes are bulged. They have pairs of wings. Examples are ants, bees, termites, flies, butterfly, grasshopper e.t.c.

Describe what will occur the population if it increases in number when food is scarce?

Answers

Answer:

more people will die

Explanation:

If you have a big population and little food mor peple will die.
There will also be riots in the streets, criminals acts will increase, this could come from stealing to murdering for food, the animal kingdom will basically go near extinction if the government can’t control its people from hunting, ultimately governments might collapse under the demands of the people.

What type of powerful storms is Mercury subject to and where do they come from?

Answers

Answer:

Mercury is wracked by intense magnetic disturbances more extreme than any on Earth, new research suggests

Explanation:

the small, rocky planet also experienced volcanic activity for much longer than once thought, according to several new studies base don observations during the latest flyby of the small, rocky planet by a NASA spacecraft.

Select the answer option that lists the levels of genetic information in order from smallest to largest.a. genome; gene; chromosome; DNA strand
b. gene; DNA strand; chromosome; genome
c. DNA strand; gene; genome; chromosome
d. gene; chromosome; DNA strand; genome
e. DNA strand; chromosome; gene; genome

Answers

Answer:

b. gene; DNA strand; chromosome; genome

Explanation:

The smallest unit in genetic structure will be gene which is a segment of DNA. After that comes DNA strand which may contain one or more genes. A chromosome is a larger structure as compared to a DNA strand because a chromosome contains two DNA strands which are joined at centromere. All the chromosomes in an individual collectively form genome so genome is an even larger term when it comes to genetic information.

Final answer:

Genetic information can be organized from smallest to largest as follows: DNA strand, gene, chromosome, and genome. The correct answer from your list is 'b'.

Explanation:

The levels of genetic information, organized from smallest to largest, are as follows: DNA strand, gene, chromosome, and genome. Let's break it down step by step:

  1. DNA strand: This is the smallest level and forms the building blocks of genetic information.
  2. Gene: Genes consist of a length of DNA that codes for a specific protein or function.
  3. Chromosome: A chromosome is a combination of many genes and is packaged into a single structure. Humans have 46 chromosomes.
  4. Genome: The genome is the complete set of genetic material in an organism. It includes all the genes and chromosomes.

Therefore, the correct answer from your list would be option 'b': gene, DNA strand, chromosome, genome.

Learn more about Levels of Genetic Information here:

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