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laila [671]
3 years ago
6

Why do leaves fall off of trees during fall and winter

Biology
2 answers:
Natalija [7]3 years ago
8 0
Because the trees go into a different state during the seasons
TiliK225 [7]3 years ago
6 0
as the days grow shorter and colder, those changes trigger a hormone in leaf-dropping trees that sends a chemical message to every leaf that says, in essence, "Time to go! Let's part company!"
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In a certain population, 99% of the people have Rh-positive blood. Suppose that two people from this population marry. What is t
Ivahew [28]

Answer:

The probability that both will be Rh-negative out of 99% Rh-positive is 0.01 x 0.01 = 0.0001.

Explanation:

The population contain 99℅ of Rh-positive. This represent almost all of the people.

However, there is still 1℅ chance of having an individual of Rh-negative.

Both of them will have the probability of 1℅ of having Rh-negative(0.01).

Therefore, Pr(Rh-negative AND Rh-negative) = 0.01 x 0.01. The result is approximately equals zero.

The both parents having Rh-negative, will have a dominant Rh-negative blood passed to their children, only recessive Rh-positive of 25℅ chance.

Since the chance of Rh-negative blood passed to their children is 75℅, it is inevitable that their children will be Rh-negative

3 0
3 years ago
The cell wall is tough, flexible and fairly rigid layer that surrounds some types of cells. It is located outside the cell membr
creativ13 [48]

Answer: Option C) Animal

The cell wall is tough, flexible and fairly rigid layer that surrounds some types of cells. It is located outside the cell membrane and provides cells with structural support and protection. All BUT ONE type of organism has cells with cell walls. That is an animal

Explanation:

One distinguishing feature of animal cells compared to other living cells is the absence of cell wall.

However, the animal cell possess a cell membrane, with which it regulates substances entering or leaving the cell, and also provide protection and mechanical support for the cell against foreign invaders such as pathogens.

7 0
3 years ago
Question: What do all organisms<br> have in common?
bogdanovich [222]

Answer:

All living things have certain traits in common: Cellular organization, the ability to reproduce, growth & development, energy use, homeostasis, response to their environment, and the ability to adapt. Living things will exhibit all of these traits.

5 0
2 years ago
PLS NOR RUBBISH ANSWERS, NO LINKS, AND I'LL MARK BRAINLIEST!!!!!!!
Bess [88]
Toucan and monstera plant adapted to their environment, which gave them advantages for survival and aid. the toucan beak adapted over time to access food easier than other birds, meaning it adapted to its environment. the plant however has an adaptation that allowed it to grow its leaves longer overtime to drop water on the floor. the similarity between the two is that they both adapted in some sort of aid for themselves or environment. the contrast is that the toucan beak helps only the toucan, and the leaves only help the rainforest floor :)
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3 years ago
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Why is the pituitary gland called the master gland?
torisob [31]
It controls several other hormone glands 
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3 years ago
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