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3 years ago

Name one piece of evidence to support the theory of evolution.

Biology

2 answers:

scoundrel [369]3 years ago

6 0

Evidence for evolution: anatomy, molecular biology, biogeography, fossils, & direct observation.

Allushta [10]3 years ago

5 0

Answer:

Genetics proves it

Explanation:

Every living thing has the same genetic roots, that with fossils and proof of adaptation to environments, and you have your proof, there are soo many other sources of evidence too.

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Why have plants evolved ways to prevent self-fertilization? Why do you cross-fertilization (plant to plant) more beneficial to t

aliya0001 [1]

It might be because making it a hybrid could help get nutrition and other things it needs. I don't know exactly though

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3 years ago

True or False: The Mantis Shrimp break aquarium glass. * O True False

makvit [3.9K]

The answer is true. Their strike can break aquarium glass and even split open human thumbs.

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3 years ago

Osteoporosis is a condition in which the density of bones is decreased so much that the individual is at a higher risk of fractu

IRISSAK [1]

Answer:

A) Calcitonin injection

Explanation:

Parafollicular cells or C-cells of the thyroid gland produce a hormone which is involved in the regulation of calcium levels in the blood. This hormone is Calcitonin. It works in an antagonistic manner with the Parathyroid hormone (PTH). Calcitonin decreases the calcium level in the blood by increasing absorption of calcium ions in bones. In osteoporosis, when the patient is given the injection of hormone calcitonin, it produces and increase in bone mass because it negatively affects the rate of absorption of bone by the osteoclasts.

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3 years ago

Rabbits, turtles, fish, humans, and whales all share certain characteristics but also differ from each other. All of these speci

Delvig [45]

The levels of organisation are

Domain: Eukarya

Kingdom Animalia

Phylum :Chordata

Explanation:

They all share these levels of organisation because;

for the Domain Eukarya, they have;

→multi-cellular cells containing nucleus; and other membrane bound organelle.e.g Mitochondrial.

→their DNA located in the nucleus packaged as linear chromosomes bounded by histone proteins.

→mode of reproduction which is sexual.

They share Kingdom Animalia because;

→they have multi-cellular, specialised cells, bounded by plasma membranes.

→they have specialized tissues, organs, and system.

→they all undergo heterotrophic mode of nutrition as evident in the question 'that they must consume plants and animals as source of energy'

→they exchanged communication by nervous ssytem and 

→ use homeostatic mechanisms to regulate water balance of the body through the kidney.

→Humans,Rabbits,and whales are VIVIPAROUS; they give birth to young ones alive.

→Most fishes lay eggs to reproduce, they are said to be Ovoviviparous.

They belong to phylum Chordata because ;

→they all have noto chord; which serve as template for axial skeleton.

dorsal hollow nerve cord -template for the brain and spinal cord

→pharyngeal slits- templates for gill aches in bony fishes and components of inner ear in land animals.

→ tail length varies in these organisms.

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4 years ago

Which is used to calculate standard deviation, X stands for ______ value.

andreev551 [17]

Answer:

X is the quantity value

Explanation:

To calculate the variance follow these steps: Work out the Mean (the simple average of the numbers) Then for each number: subtract the Mean and square the result (the squared difference). Then work out the average of those squared differences. Then the standard deviation of X is the quantity. (derived using the properties of expected value). In other words, the standard deviation σ (sigma) is the square root of the variance of X; i.e., it is the square root of the average value of (X − μ)2.

3 0

3 years ago