Ask question

Ask question

All categories

2 years ago

10

Why have wildlife experts only estimated the number of endangered species in the world?

1 answer:

natulia [17]2 years ago

4 0

They can only estimate because- 1) they can't estimate how fast they can brood 2) they don't know if their predators will reproduce fast 3) they don't know if people will stop killing and destroying habitats 4) They don't know where all the species are, they might have escaped into other places fit for them to live

You might be interested in

How do seabirds get caught in fishing nets ?

Liula [17]

Answer:

Mammals are usually caught in nets, but long line fishing catches more than just target species of fish. Sharks, turtles and seabirds are all attracted to the bait on the lines of long line fishing. Seabirds get caught on the lines and drown.

Explanation:

5 0

3 years ago

Read 2 more answers

A person cannot become a problem drinker by drinking beer.<br> a.true<br> b.false

katrin [286]

False. A person cannot become a problem drinker by drinking beer.

6 0

2 years ago

What is true for carbohydrates?

Nitella [24]

Answer:

the 3rd one

Explanation:

4 0

2 years ago

Read 2 more answers

I need help I will mark brainliest <br><br><br> Can someone give me the step by step answer

OLga [1]

Answer

68.6 m

Explanation:

<u>Given-</u>

Mass = 0.5 kg
Potential energy = 34.3 J

<u>To find -</u>

Height of the tree upto which the squirrel climbed.

<u>Solution-</u>

Potential energy of a body = mgh

34.3 = 0.5×h (mg = 0.5kg)

h = 34.3/0.5

= 68.6 m

Option third.

4 0

2 years ago

A pharmacist has two vitamin-supplement powders. The first powder is 10% vitamin B1 and 30% vitamin B2. The second is 15% vitami

Basile [38]

Answer:

$560$ mg of powder 1 and $160$ mg of powder 2

Explanation:

Let "X" denotes weight of powder 1 added to the new mixture and "Y" denotes weight of powder 2 added to the new mixture

Total weight of vitamin B1 in the mixture is equal to $80$ mg

Total weight of vitamin B2 in the mixture is equal to $200$ mg

Equation 1

$0.1 X + 0.15 Y= 80$

Equation 2

$0.3 X + 0.2 Y= 200$

Let us simplify the above two equations, we will get

$10 X + 15 Y = 8000\\3X + 2Y = 2000$

$2 (10 X + 15 Y = 8000), 20X + 30 Y = 1600015(3X + 2Y = 2000), 45X +30Y = 30000\\25 X = 14000\\X = 560$

Substituting value of X in equation 2 we get

$0.3 * 560 + 0.2 Y = 200\\0.2 Y = 200 - 168\\Y = 160$

7 0

3 years ago