please answer this, i would be very helpful!

Answer: changes in climate

Change in climate information that fossils in samples from Earth's crust reveal about Earth's history. So, the correct option is (A).

A fossil is defined as the preserved remains, impression, or trace of a once-living thing from a past geological age, including bones, shells, exoskeletons, fossilized traces of animals or microbes, amber, hair, petrified wood, and DNA. The totality of fossils is known as the fossil record.

There are five types of fossils which are as follows:

The fossil record shows that the types of living things on Earth changed over time which reveals the Earth's history.

Thus, change in climate information that fossils in samples from Earth's crust reveal about Earth's history. So, the correct option is (A).

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Answer:

Genetic relationships are analysed based on the comparison of allelic identity or differences, regardless of the number of SNPs that differ between two alleles of a gene, which simplifies the analysis.

Explanation:

Answer:

to stop animals from eating plants

Explanation:

the thorns and spines help protect the plant for example if we touch the plant it hurts same goes with animals

Answer:

A. To stop animals from eating plants

Answer:

Somatic mutations are mutations that occur in body cells, that is the cells that do not make gametes. These mutations are not passed on to further generations; for example, if a mutation that changes a gene in a skin cell would not affect your children because skin cells don't produce gametes.

Explanation:

Answer:

Explanation:

Explanation; Somatic mutations are mutations that occur in body cells, that is the cells that do not make gametes. These mutations are not passed on to further generations; for example, if a mutation that changes a gene in a skin cell would not affect your children because skin cells don't produce gametes.

Answer:

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago.

Explanation:

the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

Answer:

You are correct

Explanation:

According to the geological time scale,  mammals  evolved after the first insects evolved.

Answer:

a

Explanation:

clouds form when water rises as water vapor and cools and condenses into clouds

Answer:Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin.

Explanation:

Answer:

c

Explanation:

50 i think

Explanation:

be cause a right angle is 90 so if the acute angle is smaller it should be a smaller number but its hard to say without an image to help us out

The fundamental structure of the membrane is the phospholipid bilayer , which forms a stable barrier between two aqueous compartments . ... Proteins embedded within the phospholipid bilayer carry out the specific functions of the plasma membrane , including selective transport of molecules and cell - cell recognition .

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Answer:

Each organism has a basic unit of structure which are cells.

Explanation:

;)

Cells are regarded as the fundamental units of life in part because they come in discrete and easily identifiable packages.

Cells are the fundamental building blocks of all life. Trillions of cells make up the organisms' body.

They support the body's structure, absorb nutrients from food, convert those nutrients into energy, and perform specialized functions.

Nucleic acids, proteins, carbohydrates, and lipids are the four major classes of organic molecules found in all cells.

Cells are regarded as the fundamental units of life in part because they come in discrete and easily identifiable packages.

Like the walls of a house, all cells are surrounded by a structure called the cell membrane, which serves as a clear boundary between the cell's internal and external environments.

Thus, cells are the basic unit of structure of all organisms.

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Answer:

These concerns range from ethical issues to lack of knowledge on the effects genetic engineering may have. One major concern is that once an altered gene is placed in an organism, the process cannot be reversed. Public reaction to the use of rDNA in genetic engineering has been mixed.

I don't know if that's right

Answer:

Mendel's Laws of Heredity are usually stated as:

1) The Law of Segregation: Each inherited trait is defined by a gene pair. Parental genes are randomly separated to the sex cells so that sex cells contain only one gene of the pair. Offspring therefore inherit one genetic allele from each parent when sex cells unite in fertilization.

2) The Law of Independent Assortment: Genes for different traits are sorted separately from one another so that the inheritance of one trait is not dependent on the inheritance of another.

3) The Law of Dominance: An organism with alternate forms of a gene will express the form that is dominant.

Explanation:The genetic experiments Mendel did with pea plants took him eight years (1856-1863) and he published his results in 1865. During this time, Mendel grew over 10,000 pea plants, keeping track of progeny number and type. Mendel's work and his Laws of Inheritance were not appreciated in his time. It wasn't until 1900, after the rediscovery of his Laws, that his experimental results were understood.

6 ways of expressing standard atmospheric pressure include: millimetres (or inches) of mercury, pounds per square inch (psi), dynes per square centimetre, millibars (mb), standard atmospheres, and kilopascals.

Answer:

Explanation:

Answer: Haploid cells with a smaller number of chromosomes than the parent cell

Explanation: meiosis results in four daughter cells which are haploids. Haploids have half the number of chromosomes of the diploid parent cell.

Answer:During photosynthesis, plant roots take in water from soil.

Explanation:

Answer:

During photosynthesis, plants take in carbon dioxide from the air.

Explanation:

The second answer is correct because it includes an interaction between the atmosphere and the biosphere.

Answer:

Explanation:

hgd

Answer:

Bones are composed of two types of tissue:

1. Compact (cortical) bone: A hard outer layer that is dense, strong, and durable. It makes up around 80 percent of adult bone mass.

2. Cancellous (trabecular or spongy) bone: This consists of a network of trabeculae or rod-like structures. It is lighter, less dense, and more flexible than compact bone.

Also found in bones:

osteoblasts and osteocytes, responsible for creating bone

osteoclasts or bone resorbing cells

osteoid, a mix of collagen and other proteins

inorganic mineral salts within the matrix

nerves and blood vessels

bone marrow

cartilage

membranes, including the endosteum and periosteum

Explanation:

Answer:

It's because they get eaten

Answer:

They help reduce greenhouse gas emissions, but the downside is hybrid cars require more energy to produce than normal cars

Explanation:

Ok I'll see what I can do. I'll try my best to provide you the correct answer.

Answer:  Pioneer organisms move into new communities first.

Explanation:

Answer:

Magnification In general terms, it can be said that how big or small the image appears with respect to the object is called magnification of the object.

Explanation:

It is represented as the ratio of the height of the image to the ratio of the height of the object. Magnification is denoted as the letter 'm'.

Magnification is the process of enlarging the apparent size, not physical size, of something. This enlargement is quantified by a calculated number also called "magnification".

A cisterna refers to a flattened membrane disk that makes up the Golgi apparatus. A typical Golgi has multiple stacks of anywhere from 3 to 7 cisternae stacked upon each other like dinner plates.The cisternae also carry structural proteins important for their maintenance as flattened membranes and their stacking upon each other.

Answer:

Osmosis

Explanation:

Osmosis is the diffusion of water or gas molecules, from a region of higher concentration to a region of lower concentration, through a partially permeable membrane

Diffusion is the net movement of anything from a region of higher concentration to a region of lower concentration.

Plasmolysis is the process of shrinkage or contraction of the protoplasm of a plant cell as a result of loss of water from the cell.

The difference in the concentration of a substance between two areas is called the concentration gradient.

Answer:

Where is the cycle???

Tell me please!!?

Answer:

facts: The tendency to maintain a stable, relatively constant internal environment is called homeostasis. The body maintains homeostasis for many factors in addition to temperature. For instance, the concentration of various ions in your blood must be kept steady, along with pH and the concentration of glucose.

opinions: Homeostasis is the tendency to resist change in order to maintain a stable, relatively constant internal environment. Homeostasis typically involves negative feedback loops that counteract changes of various properties from their target values, known as set points.

Explanation:

Answer:

Homeostasis is the tendency to resist change in order to maintain a stable, relatively constant internal environment.

Homeostasis typically involves negative feedback loops that counteract changes of various properties from their target values, known as set points.

In contrast to negative feedback loops, positive feedback loops amplify their initiating stimuli, in other words, they move the system away from its starting state.

Biological systems like those of your body are constantly being pushed away from their balance points. For instance, when you exercise, your muscles increase heat production, nudging your body temperature upward. Similarly, when you drink a glass of fruit juice, your blood glucose goes up. Homeostasis depends on the ability of your body to detect and oppose these changes.

Explanation:

Answer: sporophytes photosynthesise, particularly when immature, but depend on gametophytes for at least 50% of nutrient requirements

Explanation: In mosses, the gametophyte generation is the dominant generation unlike in higher plants. The diploid sporophyte generation produces several spores per capsule.

Answer:

c

Explanation:

Answer:

The purpose of mitosis is to make more diploid cells.

Explanation: