Fossil evidence shows that toothed leaves were present in Bighorn basin during the
Paleocene and Eocene, but not during the PETM. Which of the following explains the
changes in the fossils over this time?

Answer:

Mark one coin with an "F" and the other with an "M" to represent each of the parents. The parents are heterozygous for all the Smiley Face traits.

Answer:

We've just attended a birthday party

you locked the door

Explanation:

English lesson

Answer:

Not really, because one pea pod might hold five peas, which another one on the same plant might be holding seven.

Answer:

Option C

Explanation:

Larger macromolecules break down like water and create covalent macro molecules.

Later while chemical reactions they combine again to form covalent molecules .

Option C is correct

Explanation:

in dna cytosine pairs with guanine and adenine pairs with thymine add on rna adenine pairs with uracil

Answer:

A. two strands of DNA joined by nitrogenous bases.

Explanation:

Answer:

chromosome

or venue mutations

Answer:

A

Explanation:

in the spring

Fertilizer is most effective when used on plants at their peak growing cycle.

Answer:

Homologous structures define similarly structured body parts among organisms that serve different functions. They show common ancestry; an example would be a human arm and horse leg (both made of bone, but different uses).

Analogous structures define differently structured body parts that serve the same function. They do NOT show common ancestry. An example would be a whale fin & dolphin fin; one is made of bone and the other cartilage, but they are both used to swim).

When a cell is submerged in a hypertonic solution, water escapes and the cell shrinks. There is no net water flow in an isotonic environment, hence the cell size does not vary. Water will enter a cell when it is placed in a hypotonic environment, causing it to swell.

A hypertonic solution is one where there is greater concentration of solute outside the cell than inside the cell. Since water follows the most solute, it leaves the cell. This causes animal and plant cell membranes to shrivel up. The plant cell walls remain intact but animal cells will suffer more.

Hypotonic solutions is when water molecules move from a high water potential to a low one because of diffusion.

Isotonic solutions are those solutions that have the same osmotic pressure at a given temperature.

A cell is the smallest basic unit of all living organisms. Cells provide structure for the body, take in nutrients from food, convert those nutrients into energy, and carry out specialized food function. Cells also contain the body's hereditary material (DNA) and can makes copies of themselves.

Osmosis is the movement of water across the cell membrane, where the water goes from a higher concentration to a lower concentration. It plays an important role in activation, growth, and differentiation of T and B lymphocytes, macrophages, NK cells and other non-hematopoietic cell types.

Cellular diffusion is the process that causes molecules to move in and out of a cell. Diffusion is important as it allows cells to get oxygen and nutrients for survival. In addition it plays a role in cell signaling which mediates organism life processes.

Answer:

D

Explanation:

because Weight is heavy something is and mass is how heavy

Answer:

Option C.............

Prokaryotes and eukaryotes differ in the presence of the nucleus and the organelles. Prokaryotes are small in size and can easily reproduce and adapt.

Prokaryotes are primitive simple cells that are characterized by single cells with no distinct nucleus and membrane-bounded organelles. Cyanobacteria and bacteria are examples of prokaryotes.

The simple structure of the prokaryotes makes them adapt to environmental changes faster than the complex eukaryotic cell. They have a quick reproduction rate and short life cycles, unlike plants and animals.

The simple and small system of the prokaryotic cell allows the movement and diffusion of the ions and molecules easily. They are extremophiles and can survive harsh environments.

Therefore, small and simple prokaryotic cells are advantageous over eukaryotic cells.

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Agricultural communities are positively affected with the addition of soil invertebrates due to enhance of the soil structure.

Soil invertebrates has a good affect on the decomposition rates, soil aeration, nutrient mineralization. It betters the soil so the plants can grow more easily with high productivity.

So we can conclude that agricultural communities are positively affected with the addition of soil invertebrates due to enhance of the soil structure.

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Answer:

Every circuit is comprised of three major components:

a conductive "path," such as wire, or printed etches on a circuit board;

a "source" of electrical power, such as a battery or household wall outlet, and,

a "load" that needs electrical power to operate, such as a lamp.

Explanation:

Answer:

evolution of bipedalism in homo sapiens

Answer:

tongue is the answer....

Answer:

a. Mice

Explanation:

mice was used by Griffith in his investigation

Answer:

Explanation:

Question 6 is A because it is only that particular community and only a certain amount will most likely not have the disease

Question 5 is A, C, and D because they all explain why the vaccine is effective  and how it might help out the community

Answer:

15 cardinals per square kilometer

Explanation:

60 are total in 4 square kilometers

To find how many there are in only 1 square kilometer divide 60/4

and you get 15 as a result

They encourage Karen to brainstorways to refuse a cigarette in different situations that might come up,  thinking skill are the parents helping Karen build -handling a hypothetical situation.

Active peer pressure occurs when your friends explicitly persuade you to do something. Examples are offering and forcing you to drink then criticizing for refusing it. Forcing you to attend a party even your parents do not agree.

On the other hand, passive peer pressure happens within a person's want to fit in to his/her colleagues. It is further classified into social modeling and perception.

Thus, option "A" is correct.

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Answer:c

Explanation:

Water pollution is the introduction of pollutants either naturally or due to human activities. Runoff from many farms can result in water pollution.

Water pollution is the contamination of water sources with some pollutants which make the water unusable for the purposes like drinking, cooking, cleaning, swimming, and other activities.

These substances can be chemicals, bacteria, parasites, etc. All sorts of pollution make go to the water directly or indirectly.

One of the prevalent sources of water pollution is runoff from many farms.

Thus, the correct option is C.

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Respiratory Diseases include:

•asthma

•chronic obstructive pulmonary disease (COPD)

•pulmonary fibrosis

•pneumonia

•lung cancer

•Emphysema

•Pleural Effusion.

Trophic webs involve energy transference through different organisms occupying different levels. These are producers, consumers (herbivores and carnivores), and decomposers. Option B. Zooplankton

The trophic web is the interaction between different organisms involving the transference of energy when some of them feed on the other ones.

The ones placed at lower levels pass energy to the ones at the higher levels.

Organisms at each level feed on the preceding one and become food for the next one.

• The first link corresponds to a producer organism -autotroph-.

• The following links are the consumers -heterotrophs-: herbivores and carnivores.

• The last links are the decomposers that degrade organic matter from dead organisms.

Because it is a web, all organisms are in equilibrium until a change occurs. When a sudden change affects any of the involved links, there can be a cascade effect on the web.

Any change in a link population size (increasing or decreasing) will affect the superior links and the immediately anterior link.

In this trophic web, we can see that the producer is phytoplancton (first link).

Phytoplancton is eaten by zooplankton and shrimp (second link). They are primary consumers that feed on phytoplancton.

The correct answer is b. zooplankton.

a. squid ⇒ They get energy from shrimp

b. zooplankton ⇒ They get energy from phytoplankton

c. sperm whales ⇒ they get energy from squids

d. phytoplankton ⇒ they get energy from sunlingh.

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Answer:

The cardiac muscle is only found in the heart.