A collision with a large meteorite may have contributed to the mass extinction at the end of the _____ era.

Answer: c. waxy needles

Taiga is the biome with needle leaf trees. It is a cold biome. Douglas-fir have long, thin and waxy needle shaped leaves. Wax prevents the loss of water through transpiration and also prevents freezing and leaves being drying out.

The correct answer is:

d. growth pattern

Explanation:

Plants in the grassland must face dry situations, fires, and grazing animals. They have long, narrow leaves, long roots, soft stems, and can even go lethargic to sustain their tough environment. They have adjusted how they grow and scatter their pollen and seeds so that more plants can live in this incredible habitat.Average growth is the series of changes in height, weight, and head circumference that are harmonious with authorized standards for a released population.

6. Answer;

- Faster

Explanation;

Compared to the time in Earth's history before humans appeared, rates of soil erosion are faster.

-Soil erosion is the wearing apart of topsoil. Topsoil is the top covering of soil and is the abundant fertile because it includes the several natural, nutrient-rich minerals. Every year, around 75 billion tons of soil is disintegrated from the land—a rate that is about 13–40 times as quick as the typical rate of erosion.

Additionally, some human activities associated with building structures increases the rate of erosion

7. Answer;

-Mass movement

The process responsible for moving material downslope under the influence of gravity is called mass movement.

Explanation;

-A mass movement is the geomorphic process through which soil, sand, regolith, and rock move downslope typically as a solid, continuous or discontinuous mass, largely under the force of gravity.

-It involves the sudden movement of a block of material along a flat, inclined surface is called a rock slide or a slide.

8. Answer;

The plant roots bind the soil and regolith together.

The removal of vegetation may trigger mass movements because the plant roots bind the soil and regolith together.

Explanation;

-Vegetation removal can trigger mass wasting or mass movement as vegetation stabilizes soil. When it is removed from a slope, the slope is vulnerable to water and wind erosion.

The right answer is the lobed body.

The name trilobite comes from the subdivision of the body into three longitudinal lobes:

A medial lobe, the rachis,

And two lateral lobes, the pleura.

There is also a subdivision into three regions from front to back: the cephalon ("head"), the thorax and the pygidium ("tail").

The number of spines is a trilobite characteristic that did not change over time, unlike the shape of their eyes or the number of body segments.

Trilobites are an extinct group of marine arachnomorph arthropods. They are recognized by their characteristic 3-lobed, 3-segmented body structure. Although trilobites underwent numerous changes over time due to evolution, one characteristic that did not change was the number of spines. The number of spines remained consistent throughout the trilobite's existence. This is in contrast to other trilobite characteristics such as the shape of their eyes or the number of body segments, both of which evolved over time in response to changing environmental conditions.

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Based on the visible features, one possible conclusion is that Cell B is more active than Cell A. The correct option is B. more active transport occurs in cell A than cell B.

Based on the image you sent, here are some possible conclusions that can be drawn about the activity of the two cells:

Cell A:

Less active: The presence of a cell wall suggests Cell A is a plant cell. Plant cells typically have less metabolic activity compared to animal cells due to their slower growth rates and photosynthetic energy production.

Storing energy: The large central vacuole in Cell A could indicate storage of excess nutrients or waste products, suggesting lower metabolic activity compared to Cell B.

Cell B:

More active: The absence of a cell wall suggests Cell B is an animal cell. Animal cells are generally more metabolically active than plant cells due to their diverse functions and constant need for energy from external sources.

Engaged in protein synthesis: The prominent rough endoplasmic reticulum (RER) in Cell B indicates high protein production activity, suggesting a more active metabolic state compared to Cell A.

Complete Question:

The diagram below represents two cells viewed using the same magnification with the same microscope.

One possible conclusion that can be drawn about the activity of these two cells is that:

Your best answers are T T F

Answer:

skin cancer is and ultraviolet light

Explanation:

A population that is decreasing in size can be due to factors such as low birth rates, high death rates, emigration exceeding immigration, or environmental changes affecting reproductive success. Genetic diversity plays a crucial role in the vulnerability of a population to decline, making it more susceptible to recessive lethal alleles and changing environmental conditions. The extinction vortex describes how declining populations face increasing risks of extinction due to loss of genetic diversity, inbreeding depression, and other factors.

The metaphor for life in the poem is a Monopoly game, as the poem begins with 'Some say life's a Monopoly game,' comparing life's journey to the board game.

The metaphor for life in the poem given is D. a Monopoly game. The opening line of the poem, "Some say life's a Monopoly game," explicitly states that life is being compared to the board game Monopoly. This is an example of metaphor as a literary device, where life is not literally a board game, but it is being compared to one in order to illustrate the idea that life, like Monopoly, has various ups and downs, successes and failures, and is ultimately a game of chance and strategy.

Answer: B. Water breaks down into oxygen molecules for respiration.  

Water is the required for photosynthesis, a process by which plants (terrestrial and aquatic) makes their food by utilizing water as a reactant to produce oxygen and glucose as product. The glucose act as a source of energy for conducting various metabolic processes in plants but oxygen is released in the air.

[tex]6CO_2\ \ \ \ +6H_2O\rightarrow\ C_6H_{12}O_6+6O_2\\carbon\ \ \ \ water\ \ \ \ \ \ \ \ glucose\ \ \ \ \ \ \ oxygen\\ dioxide[/tex]

This oxygen is necessary for terrestrial and aquatic animals for respiration. Therefore, water breaks down into oxygen by the process of photosynthesis, hence water plays important role in respiration in living beings.  

Answer: it grows a tube to travel down to the ovary

Explanation:

As a result of pollination, pollen grain lands on the sigma of the pistil or carpel.  On the stigma pollen grain begins to germinate and grows a long pollen tube.  The pollen tube grows longer and makes its way from the stigma, down the style and reaches to the ovary. Pollen tube carries two male gametes or sex cells. One male gamete fertilize the egg cell to produce zygote and the gamete fuses with polar nuclei to form primary endosperm cell.

Answer:

It grows a tube to travel down to the ovary

Explanation:

When the light absorbs by the photosynthetic apparatus, the water molecules break down to produce essential material to continue the photosynthetic cycle as electron and H-ions. The H-ions becomes stored in thylakoid chamber and passed through the ATP synthetic machines to refill the ADP or AMP molecules. The generated electron passes through the various stages of photosynthetic series to finally produce the NADPH which also acts as energy transfer compound. At the PSI, the electron transfer to the NADP to generate NADPH.

The right answer is D.

Light is essential for any plant so as chlorophyll. They allow plants to convert light energy into sugars.

It appears that a correlation links productivity and chlorophyll under special conditions. The more chlorophyll there is, the more electron transfer is ensured, the more photosynthesis is amplified and the more oxygen and glucose are produced.

The amount of Chlorophyll contained in the leaves provides information on the health of the plant, its vigor and ensures that its Nitrogen requirements are met. The trace elements necessary for the plant are drawn by the roots in the soil.

Nucleus is called the brain of the cell. Nucleus is the organelle which controls the activities of the cell.

The command center of eukaryotic cells is the nucleus. Additionally, it controls how genes and gene expression are coordinated in Chromosomes, nuclear membrane, nucleoplasm, and nucleolus make up the nucleus' structure. When compared to other cell organelles, which make up around 10% of the cell's volume, the nucleus is the most noticeable organelle. A eukaryotic cell typically possesses the one nucleus. Some eukaryotic cells are enucleate.

The first organelle to be identified or found was the nucleus. The nuclear envelope, which is a nuclear membrane, the nucleoplasm, the nucleolus, and the chromosomes make up the cell nucleus. The matrix found inside the nucleus is known as nucleoplasm, sometimes known as karyoplasm. The cytoplasm and the components of the nucleus are separated by the nuclear membrane.

Therefore, nucleus controls the cell and its activities.

Learn more nucleus here:

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Answer:

The correct answer would be option D.

Explanation:

Pollen of a plant is a gamete, that contains half of the alleles are required to produce the plant. Pollen fuse with stigma and complete the required alleles or genetic information.

Possible combinations in pollen would be one allele from each trait in every form either dominant or recessive. So ST, St, sT, st. would be the correct possible genetic combination present in a single grain.

Thus, the correct answer is option D.

Answer:

Option D

Explanation:

There are two different traits represented by the term "SsTt". Where "S" is the allele for a dominant trait 1 and "s" is the allele for a recessive trait 1.  Like wise "T" is the allele for a dominant trait 2 and "t" is the allele for recessive trait 2.

In a genetic combination , both the  allels of both the traits will pair up with each other one by one.

i.e "T" will pair up with both "S" and "s" to form "TS" and "Ts" gametes

Similarly "t"will pair up with both "S" and "s" to form "tS" and "ts" gametes

Hence, option D is correct

Answer:

c) the energy pyramid will be completely disturbed.

Explanation:

Answer:

Black

Explanation: